█████████ ██ ████████████████ ██ ██████████

█'███████████ ███████ ███ ███████████

████'████████ ███ ████, ██ █████████ █'████████████████ █████████/████████ ██ ████ █████ ████████, ████████ █'███████████ ███████ ███ ███████████, ██ █████ ███████ █ ████'███████ ███████ █'███████████ ███ ██ ██████ ██████████ ${\displaystyle \mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}$ █ ██ █████████ ████████████ █████. ██ ██████ (█████) ██████ ██ ████████ (████ ${\displaystyle \mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}$), ████ █'█████████ (███) ███ ██ ███████ █ ██ █████ █ ███ █████ ███████, ████████ ███ ███████████ (██████ █████) ███ ███ █████████ █'████ ${\displaystyle {\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}^{\prime }}$ ████████ ██ ██████ ${\displaystyle \mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}$ ███ ██████ █████ █████████ (███████ ███████: ${\displaystyle {\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}^{\prime }>\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}$). ██ █████ ███ ███████████ ██ ██'██████████ ████████ ${\displaystyle \mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}$ █ ██ ███████████ ██████ ${\displaystyle \mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}$ ███ ███ ██ ███████████ "████" █'█████████ ████:

${\displaystyle \mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}\simeq \frac{{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}^{\prime }}{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}}$.

██ ██████ █████ ███ ███████████ ███ ██ ██████ █████████████, ██ ██████████ ████████ ███ ${\displaystyle +\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}$ █ ${\displaystyle -\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}$ (█ ██████ █'█████ ████████████ ███████████ █████ █████████ ███ ██████). ██ ████████ ██ ████ ███ ██████ █████ █'████ ${\displaystyle \mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}$ █ ██████ ███████ ██ ██'████████████████ █████████████ █

${\displaystyle \mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}_{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}\simeq \mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}^{\prime }\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}\simeq \frac{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}{{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}^{\prime }}\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}$

██ ███ ██ █ █████ ███ █████ █████████ ██ ██ ███████

${\displaystyle \mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}=\frac{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}}$.

███ ██ █████████████ █████ ████████ ██ ████ █████ █'████ ${\displaystyle \mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}$, ${\displaystyle \mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}_{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}}$ █ █████ █'████████████████ ███ ███████ ███████ ████'█████████. ███ █'█████████ ████ ██████ ██████

${\displaystyle \mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}\cdot \mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}_{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}\simeq \frac{{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}^{\prime }}{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}\frac{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}{{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}^{\prime }}\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}\simeq \mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}$.

██████ █████████, ██████ ████-████████████, █████ ██████ ███████████ ███ ███████ ████ ████:

${\displaystyle \mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}\cdot \mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}_{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}\ge \frac{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}}$

███████████ ██ ██████ █████████ ${\displaystyle \mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}/\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}$ █████████ ██ ███████ █ ███████ █████ ██████████ ████████ ${\displaystyle {\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}_{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}}$ █ ${\displaystyle {\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}_{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}}$ (████ ██████████████ ██ ███████).

██ ██████████████ █████████/████████ ██ ████ ██████ ███ ██ ████████ █████ ███ ████████████████ (${\displaystyle \mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}$ █ ${\displaystyle \mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}_{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}}$) ███ ██████ ████████ █ ██ ███ ██████ ██ ██ ██████ ██████. ████ █████████ █'████████████████ ███████ ██████ ███ ███ ███ ██████████ ███ ███ █████████ ████████ ██ █████ ██████████, █ ██████ █████████, ██ ████████ ██████ █████ █████████ █ █████ ████████ ██ ████ ███ ██████████ ████████, ██████ ███ ████████████████ █████. █████ ███ ██ █████ ██ ███████ █'████████████████ ██ ███ █████████, █████ ███ ███████ ██████ ████'█████ (█████████ ██ ███████████████ ███████ ███ ██ ███). ██ ██ █████ ███████████ █████ ██████████ ██ ████████ ███ █████ ████████ ██ █████ ██████ ████. ██ ██ ██ ████████ ███ ███ ███████, ██████ ███ ███ █████ ███████████, ██████ ██ ██ █████ ██ ████ ██ ██████████ ██ ███ ██████ █████ ███████ █████████ █'████████.

██ █████ █████ ███████████ █ ████████ █████ ████████████ █████ █████████ ███ █'████████████████ ██ ██████████ ██ ███████████ █ ██████ ██████████. ██████████ ██ ████ ███ ████████ ████'████████ █████████: «█████████ █████████████ █████████ ███████ ██████ ███████████ ███████████████ ████ ███ ███ ████████████ ██████████████». ███ █████ ███ ███ ██████ ███ ████████ ███ ██████ █ ████████████ ██████████, ██ ██ ██████ █ ███████ ██ █████████ ███████ █ █████ ██████████ ███ ███ ███████ ██████ ██████████. ██ ██████ ████ ██ ██████████ █'█████████████ ██ ██████ ██████████, ███ ████ ████████ ████████ ████ ███████████████ █ ███ ███'████████████████ ██ ██████████: «████ ██ █████████ ██████████ ███ ██ ███ ████████████ ███ ██████ █████████ ███████ ██████ ████ █ █████ ███████████ ███ █████████ ███████ ██ ████████ ██ ██████ █ ██████ ███ ██ ██████████ ████'███████████ ███ ██████████ ██████████████ █████ █████████████ (█████████ ███ ██████ █'██████), ██ █████ ███ █████ ███ █████████ █ ███████ ████'█████████ ███ ███████ ██████ ███████████████ ████████ ████'███████████ ███ ███████████ ('████████ ████ █████' ██ ██████████), █ ███ ███ ████████ ███████████ ███ ██ ██████ ████████████ ███ ██ ██████ ███████████.» ██ ███████ ██ ██████ ██████████ ████████ ██████ ██ ████████████ █████ ███ ███████████. █████ ███████ ██████ ███'██████████ ██ ███████ ███ ████ ███████ ███ «██ █████████ ██ ████████████████ ██████████ ██ █████ ██ █████████ █████████████ █████ ██████████ ███ ██████ ███████ ███████████████ █████ ███████ █████████ ███ ████████████ █████ ██████ ███ ██████...». ██, ███████ ██'███████ ███████, █. ████████ ██ ███████████ ███ ████ ███ ██ █████████ █'████████████████ ██ ██████████ ███ ███████████ ██████████ ██ █████████ █████████ █████████████ █████████ ███ ████ █████████████ ██ ██████ ███████████████ █████████████ ████'██████ █████ █████████ ███████████ ██████. ██ ██████ ██████████ █'███████████ █████████████ █ █████ ██████████ ████████████████ ███ ██ █████ █████ ███ ████. ████████ ███ ███████████ ██ ████ ██████ █ █████ ██████████ ███ ██ ███████████ ██ ███████████ ███████ ████'████████████████ ██ ██████████ ████ ███████ █████ ███████ ██████████.

█████ ██████████████ ██ ██████████

████'████████ ███ ████, ██████████ ██████████ ███ █████████ █'████████████████ (█████████ ${\displaystyle \mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}$ / ████████ ██ ████ ${\displaystyle {\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}_{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}}$ - █████ ${\displaystyle \mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}$ / ███████ ${\displaystyle \mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}$ - ██████ ${\displaystyle \mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}$ / ██████ ${\displaystyle \mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}$) ███████████ ███████████████ ███████████, ██████ █████ ██████ ███ ███████████ ████████

${\displaystyle \left[\widehat{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}},{\widehat{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}}_{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}\right]=\left[\widehat{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}},\widehat{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}\right]=\left[\widehat{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}},\widehat{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}\right]=\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}$

████ ${\displaystyle \widehat{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}}$ █ █'█████████ ████████████, █████████ ███'███████ ██████ ███ ███████ ███████████.

██, ██████ ${\displaystyle \mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}$ █ ${\displaystyle {\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}_{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}}$ ████ █████████ ████████, ██ █████████ ███████████ █'██████ ███████ ██████ ████████, ██ ██████ ████████ ████ ██████████ ██ ██████████████ ██ ██████-██████████ ${\displaystyle \mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}=\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}$. █'████████████████ ██████/██████ ███ █ ██████ ███████████ █ ██████ █████████/████████ ██ ████ (███ ███ ███████████ ███ ████████████ ██ ██████ █████████, ██ ████ ). ██ ██████ ███████ - ███ ███████ ███████ - █████ ███ █'████████████████ ███████/█████. ██ █████████ ███████████ ███ █████████████, ████ ██ █████████ ████████, ██ █████ ${\displaystyle \mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}$ ██████ ██ █████ ████████████: █ ██ █████████ █'██████████ █████ █████████ ███████, ███ ███ █████████ ██████ ████ ██████. ███ █ ██████ █████████ ██████████ █████ █████████ ████████████ ${\displaystyle \widehat{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}},}$ ███ █████████████████ ██'███████████ ████████ (████ ███████ █████████ █'████████████████ ███████/█████).

██ ██ ██████ ███ ${\displaystyle \mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}$ █'██████ █████ ██████ ████'███████████ ${\displaystyle \mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}$ █ ███ ${\displaystyle \mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}$ ██ ████████ ████████ █████ ██████████ ██████ ██ ${\displaystyle \mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}$ ██ ███ ██████████ ██████ █████ █████████ █████████ ${\displaystyle \mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>},}$ █'████████████████ ██ ██████████ █████████████ █

${\displaystyle \mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}\cdot \mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}\ge \frac{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}}$.

███████████ ███ █████████ ███ ███████ (████████████ ██████████ ██ █. ███ ███████ █ ███ █████████████ ██ █. █████), ██ ██████████ ██████ ███ ${\displaystyle {\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}_{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}}$ █'██████ █████ ██████ ████'███████████ ${\displaystyle \mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}$ █ ███ ${\displaystyle {\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}_{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}}$ ██ ████████ ████████ █████ ██████████ ██████ ██ ${\displaystyle \mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}$ ██ ███ ██████████ ██████ █████ █████████ █████████ ${\displaystyle \mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>},}$ █'████████████████ ██ ██████████ ███ ██████ ██████████ (█████ ${\displaystyle \mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>},}$ ███ ${\displaystyle \mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}$) ███████

${\displaystyle {\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}_{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}\cdot {\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}_{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}\ge \frac{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}\left|⟨\left[\widehat{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}},\widehat{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}\right]⟩\right|=\frac{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}}$

███

${\displaystyle ⟨\left[\widehat{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}},\widehat{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}\right]⟩\equiv ⟨\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}\left|\left[\widehat{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}},\widehat{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}\right]\right|\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}⟩=\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}⟨\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}|\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}⟩=\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}$

██████ █'████████████ ███ ███████████ ${\displaystyle \left[\widehat{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}},\widehat{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}\right]=\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>},}$ ████████ ███ █████████ ████████ █'████ ${\displaystyle \mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}$ ███ ███████ ███████████.

██████ ██ ██████ ██████████, █ █████████ ██████████ ██'█████ ██████████ ██████, ████████ ███████ ███ ██ ██████████, ██████ ██ ████ ██ ███████████ ██████████ (${\displaystyle \mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}$ █ ${\displaystyle \mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}$ ██████████████████) ██ █████████ █████████████:

${\displaystyle {\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}_{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}\cdot {\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}_{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}\ge \frac{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}\left|⟨\left[\widehat{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}},\widehat{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}\right]⟩\right|}$

████ ████████, ███████ ${\displaystyle \mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}$ █ ${\displaystyle \mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}$ █████████████, ███ █████████████ ████

${\displaystyle \left[\widehat{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}},\widehat{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}\right]\ne \mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}$.

███ ██████ ██████████ ██ ${\displaystyle \mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}$ █ ${\displaystyle \mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}$ ████ ███████████████ ████ (██████) █ ███████ (████████). ████████ ██████ ██████ ████ ████████████ █'████████████ ███████████ ███ ███████. ██ ██████ ██████████ █'███████████ █████████████ █ █████ ██████████ ████████████████ ████ ███ ████.

██ ███████ ███ ████████, ██████ ███ █████████ ███████, █████ ███████████ ███████, █████ ██████ ███████ ███ ███████ ██████ ████████ ████████ ███ ██████ ██████████ (█████ █ ██████) ████ █████ █████████████. ██████ ██ ██████ ██ ███████████ █████████████ ████ ██ ██████████ ███ ███████ ██ ████ (█ ███ ███████ ████████), ██ █████████ █ ██ ████████ ██ ███ █████████. ███████████ █████████████ █████ ███████████████ ███████████ ███ █████, █ █████████ ████████ █████ █████████████. ██ ███ █████ █'████████████████ █ ████████ (██ ████ ███████ ███ ██████) ██ █████████ ██ ███████████████. ███████ ████, ██ ██████ ███████ ██ ███████████████ █ ████ ███ ████████ ████/██████████: ██ ██████ ████ ██ ██████████ ██████████ (█████████, ██ ███████) ███ ███████ ████████████████ █████████ ███████████ ██████ ████████████, █ ███████ ███ ██ █████████ ██ ██████ ██████████ ███ ██ █████ ██ ████████ ████ █ ██████████. ███████████████ ██ █ ████████ █ ████████████████ ██████████ ███ █ ███████ ███████████ ███████ ████████ ███████████ ███████████████ █████████ ███ ███████████ ███ ████████████. ██ ██████ █████ ███████ ████/██████████, ████████ █████ ██████████████ ██ ███████████/ █████ █ ██ ████████-█████ ███████, ███ ███████████ ██ ████████ █████████ ██ ████████ ████/██████████.

████████████████ █ ███ █████████████

█████ ████████████ ████████████ █████ █████████ ███████████, ██ █████████ ███████ ████ █████████████ ██ █████████ ████████████, ████ ${\displaystyle \widehat{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}}$ (█████████ █████ ██████████) █ ${\displaystyle {\widehat{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}}_{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}=-\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}\frac{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}}$ (██████████ ███ ███████ ███████ █████ ██████████ █████ ${\displaystyle \mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}$).

██████ ███ █████████ ███ █████████, ████ ██ ████ ██████████ █ ████████ ${\displaystyle \mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}(\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}/\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>})}$ █ ${\displaystyle (\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}/\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>})\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}$ ██ ███ ████████ █'████ ████████████████ ${\displaystyle \mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}(\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>})}$ :

.

███ █████████ █ ████████ ███ ██ ███████████ ███ ${\displaystyle \mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}$ █ ${\displaystyle \mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}/\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}$ ███████ ██████ ███ █████:

${\displaystyle \left[\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>},\frac{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}\right]\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}(\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>})=\left(\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}\frac{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}-\frac{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}\right)\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}(\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>})=\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}\cdot {\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}^{\prime }(\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>})-\left(\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}(\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>})+\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}\cdot {\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}^{\prime }(\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>})\right)=-\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}(\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>})}$

██ ███████████ ██ ${\displaystyle \widehat{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}}$ █ ${\displaystyle {\widehat{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}}_{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}=-\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}\frac{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}}$ ████████, █ ████ █████ ████████ ${\displaystyle -\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}$, ███ █'███████ █████ █████:

${\displaystyle \left[\widehat{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}},{\widehat{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}}_{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}\right]\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}(\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>})=-\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}\left[\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>},\frac{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}\right]\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}(\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>})=-\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}(-\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}(\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}))=\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}(\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>})}$.

██████████ ██ ████████ ████████ █'████ ${\displaystyle \mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}(\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>})}$ ██ █████ █ ██████, ██ █████ ██ ██████ ███ ███████████ ███ ${\displaystyle \widehat{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}}$ █ ${\displaystyle \widehat{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}}$ ████ █████████ ███ █████████:

${\displaystyle \left[\widehat{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}},{\widehat{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}}_{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}\right]=\widehat{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}{\widehat{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}}_{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}-{\widehat{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}}_{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}\widehat{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}=\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}$.

██ ████████, ███ █████████ ███████████ ${\displaystyle \mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}$ █ ${\displaystyle \mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}$, ██████████████ ██ █████████ ████████████ ${\displaystyle \widehat{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}}$ █ ${\displaystyle \widehat{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}}$ ███ ███ █████████, ████ █████ █████████████.

██ ███████████, ██ ██ ███████████ ████ ${\displaystyle \mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}$, ██ ██████████████ ███████████ █████████████ (${\displaystyle \mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}$ █ ${\displaystyle {\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}_{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}}$, ██ ███████) ████ █████ █████████████ █████████.

██ █████████ █'████████████████ ██ ██████████ ██████████ ███████████ █████████████ █ █████████, ██ ███ ███████████ █ ███ ████ ${\displaystyle \left[\widehat{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}},\widehat{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}\right]=\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}.}$ ████ ███████████ ███ ████ ███████████ ████████, █ ███████ █'██████████ ██████ ██████████ (███████████, ███ ██ ███████████████ ██ ████) █ ██████████ (████████████████ ██ ██████████), ███ ██████████ ██████████. ██ ███████, ██ ██████ ███ ███████████ ███ ${\displaystyle \widehat{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}}$ █ ${\displaystyle {\widehat{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}}_{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}}$ ██████ ███ ██ █████████ ${\displaystyle \mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}$ █ ██ ███████ ███████ ${\displaystyle {\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}_{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}}$ █████ ████ █████████ ███ █████ █████████████ ████████ ███ ██████████ ██████████.

███ ████ ███ ███████ ████████ ███████ ████'████████, █. █. ██████ ███ ████ ████████ ███ ██████ █'█████████ ██████████ █████ █████████ █'████████████████ ██ ██████████. ██ █████ █ ███ █ ████ ██ ████████ █'███████████ █████████████ ██ ███ █████████, ██ ███ ███████████ █ ███ ████ ${\displaystyle \left[\widehat{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}},\widehat{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}\right]=\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}\widehat{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}}$. ███ ██████ ███████████ ███ ████ ██ ██████████████ ██ ██████████ (███ ██ ███████ ██ ███████████ █████████████ █ █████████), ██ ████ ██████ ██ █████████, ███ ██ ███████ █ █████ ██ ███████████ █████████████. █'█████████ ██████████ ███ ██ ██████ ███████, ████ █'███████████████ ████'████████████████ ██ ██████████ ██ ███ ██████ ██ ██████.

███████████ ██ ████

███ ████ █████ ████ ██████ ██ ████████████████ █████████/████████ ██ ████ ██ ███████/█████ ██ ████ ██████████, ████████ █████ █████████ █████ ███████████ ██ ███████. ██ ███████████ ██ ████, ███ ███ ███████ ███████ ████ ██████████ ████████ ${\displaystyle \mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}$ ██ █ ███ ██████ ████████████ ██████ █████ ██████████ ${\displaystyle \mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}$ ███ █████████ █'████, ████ ███████████████ ███ ██████ █ ██████ ███████████ ██ ███████, █████████ █ ███████████ ███ ███ ████ ██████████████ ██ ██████████ █████ ██ ██████████, ███ █████████ ███ ███████████ ████████████ ██ ██████ ███████████.

██ ██████ █'████ ${\displaystyle \overline{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}}$, ██████ ██ ██████ ██ ████████████ ██ ██'████ ████'█████ ██ █████████, ███████████ ██ █████████ █████ █████████ █'████:

${\displaystyle \overline{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}=\frac{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}}$.

██ ██████████ ████████, ██ █████████████████ ████████ ██ ██'████ █ ████ █████ █ █████████ ██ ███████:

${\displaystyle \mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}\cdot \mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}\overline{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}\simeq \mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}$,

██████████ ████████ ██ ███████████ ██ ███████ █████ ████████ █'████.

██████████ ██ █████████ ██ ██ ███████ ███ ██ ████████ ████/██████████ ███ ████ ████████████████:

${\displaystyle \mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}=\frac{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}{{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}_{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}}}$

██ ██████ ██████████████

${\displaystyle \overline{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}=\frac{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}=\frac{{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}_{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}}{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}}$

██ ███

${\displaystyle \mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}\overline{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}=\frac{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}_{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}}{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}}$

███, ██████████ █████ █ █████████ ██ ███████, ████████ ██ █████████ █'████████████████ █████████/████████ ██ ████:

${\displaystyle \mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}\cdot \mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}_{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}\simeq \mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}$.

██████ ██ ██████████ ████████, ██ █████████████████ █████████ ██ ██'████ █ ███████ █████ ██ █████████ ██ ███████:

${\displaystyle \mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}\cdot \mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}\simeq \mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}$,

██████ ██████████ █████ █████████ █████ ███████████ ██ ███████. █████ █████████ ██ ██████/████████ ███ █'███████

${\displaystyle \mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}=\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}$

██ ███████

${\displaystyle \mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}=\frac{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}}$

███, ██████████ █████ ██ █████████ ██ ███████, ████████ ██ █████████ █'████████████████ ███████/█████:

${\displaystyle \mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}\cdot \mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}\simeq \mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}$.

████ ███ █████████ ███ █'███████████████ ██ ██████████, ███████ ███ ██ █████████ █'████████████████ ████ ██████ ██ ████████ ███████████████ █████████ ██ ████████ ███████████ ██ ███████████. ████████ ██████ ███ ████ ███████████ ███ █████████ ██ ███████████████, ██ ███ █████████ ██ █████████ ██████████████ ███ ██████ ███ ████ █ ██████████ ███ ███ ████████ ███ ████.

█████████ ██ ██████████

███ ███████ █████████ ███ ███ ████████ ███ ████ ██████████ ██████████ █████ █'████████████████ ██████████, ████████ ██ ██'████ █████████ ███ ██ █████████, █ █████████ ██ ███████████ ██ ███████ █████ ██████ █████ ████████ ██ ████. ███████, ███ ██████ ████ ███████████, ██ █████████

${\displaystyle {\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}_{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}\cdot {\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}_{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}\simeq \mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}$

██ ██████ ██ ██ █████████ ███ ████ ████ ███ ████ █████████: «█'████████ ██ ██████████ [...] ████████ ██'███████ ████████ █████ ██████ ███ █████████ █'████████████████, ██ ████████ ██████ ██████████ ██████████. ██████ ██████, ████████, ██ ██████ ███████ ██ ███████ █ ████ (███, ████'█████████ █, ███████████ ██ ███████ ███ █████████ █ █████).»

█ █████ ██ ██ ██████ ██████████████, ██████████ ███████ ██ █████████ █████ ████████ ████████████████ ██████████ ███ ████ ███ ███████████ (████ ███████ █'███████████ ███████ ███ ███████████). ██ ██████████ ███ █ ███ ████ ██ ████████ ██ ████ ██████ ████ █████ ██ ████ █████ ████ '██ ███ █████████ (████ ███████ ████████████████ ████████████ █ ██████████).

██████████████ ██ ███████

█'████████████████ █████████/████████ ██ ████, █████ ████████████ ██████████ ██ █████ █████ ███████ ██████ ███ ████, ██████ ██ █████ ██ ███ ██████████████ ███ ████████ ███ ██ ██████████ ████████ ${\displaystyle {\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}_{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}}$ █████ █████████ ${\displaystyle \mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}$ █ ██████ ${\displaystyle {\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}_{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}}$ █████ ████████ ██ ████ ${\displaystyle \mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}$ ██ ███ ██████████:

${\displaystyle {\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}_{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}\cdot {\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}_{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}\ge \frac{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}}$.

██ █████████████ █████ █████ ███████████ █████ ██████████ ████████ ${\displaystyle {\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}_{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}}$ █ ${\displaystyle {\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}_{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}}$ ██ ████████ ██ ██████████████ ██ ██████-███████. █'█████ ███████ ██████ ███████ █████ █████████████ █ ███ ██ ████████ ██ ████████ ${\displaystyle \mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}(\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>})}$ █ ${\displaystyle \mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}(\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>})}$ - ███ ██ ███████████ ██ ███████ ████'█████ - █████████████ ███████████████ ██ ████████ █'████ █████ █████████ █ ███ ███████ ██ ███ ██████████ ███████████.

██████████████ ██ █████████

██ █████████ █'████████████████ ██████████ ██ ███████ ███ █'████████████████ █████████/████████ ██ ████ █████ ██████ ███ ████ ██ ██████ █████ █████████ ██ ████ ██ ███ █████████ █████████ █████████████, ███████ ███ █████ ██████████ ████████ ${\displaystyle {\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}_{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}}$ █ ${\displaystyle {\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}_{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}}$ ██ ███ ███████████ █████████████ ${\displaystyle \mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}$ █ ${\displaystyle \mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}$ █████████ █ ██ ███████ ███████████:

${\displaystyle {\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}_{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}\cdot {\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}_{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}\ge \frac{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}\left|⟨\left[\widehat{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}},\widehat{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}\right]⟩\right|}$

██ ███████ ███████ ████████ ██ ██████ █'████████████ ███ ███████████ ${\displaystyle \left[\widehat{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}},\widehat{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}\right]}$ █████████ ███ ███ █████████ ████████ █'████ ${\displaystyle \mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}$ ███ ███████ ███████████:

${\displaystyle ⟨\left[\widehat{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}},\widehat{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}\right]⟩\equiv ⟨\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}\left|\left[\widehat{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}},\widehat{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}\right]\right|\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}⟩}$

████████ ██████ ████████ ███, █████ ███ ███████████ ███ █████ ${\displaystyle \left[\widehat{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}},\widehat{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}\right]=\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}\widehat{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}\ne \mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}$, ██ ██████ █'████████████ ███ █████. ███████

${\displaystyle ⟨\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}\left|\left[\widehat{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}},\widehat{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}\right]\right|\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}⟩=\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}⟨\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}\left|\widehat{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}\right|\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}⟩}$

███████ ███ ██████ ██ ${\displaystyle \widehat{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}|\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}⟩}$ ███, █ ███████ █████ █████ ████'█████████ ${\displaystyle \widehat{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}}$ █ █████ ████████ █'████ ${\displaystyle \mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}$, ████████ ██████ ${\displaystyle \widehat{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}|\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}⟩=\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}$.

██████████████ ██ ███████████

█'██████████ █████ ██████ ██████ ███'████████████████ ███████████ █ ████████████ ███████ █████ ████████████ ██████████. ██ ██████████████ ██ █████████ ███████ ███████ ███ ██ █████████ ███████████ ${\displaystyle \mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}$ █ ${\displaystyle \mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}$ ███ ██████████ ${\displaystyle {\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}_{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}}$ █ ███ ████████████ ${\displaystyle {\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}_{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}}$ █████.

██ ██████████ ██████████ ███ ${\displaystyle \mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}$ █ ${\displaystyle \mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}$ - ███████████ ████ ██ ██████████ ███ ██ ██████ ██████ ███ ████ ████████ ${\displaystyle \mathbb{<span\; word-length="1"\; class="word\; redacted">█</span>}[\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}]}$ █ ██ ████████ ███ ████ ██████ ██████ ${\displaystyle \mathbb{<span\; word-length="1"\; class="word\; redacted">█</span>}[\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}]\mathbb{<span\; word-length="1"\; class="word\; redacted">█</span>}[\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}]}$ - █████ ██ █████ ████ █████████████ ████████ █'██████ ██ ████████████ ██ ███████ ${\displaystyle {\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}_{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}={\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}_{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}/{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}_{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}\cdot {\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}_{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}}$:

${\displaystyle \mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}(\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>},\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>})\equiv {\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}_{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}=\mathbb{<span\; word-length="1"\; class="word\; redacted">█</span>}[\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}]-\mathbb{<span\; word-length="1"\; class="word\; redacted">█</span>}[\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}]\cdot \mathbb{<span\; word-length="1"\; class="word\; redacted">█</span>}[\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}]={\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}_{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}\cdot {\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}_{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}\cdot {\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}_{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}}$.

██ ███████████ ███ █████████ ████ ██ ████████████:

1. ██ ${\displaystyle {\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}_{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}=\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}$, ██ █████████ ${\displaystyle \mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}$ █ ${\displaystyle \mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}$ ██ ██████ ███████████;
2. ██ ${\displaystyle {\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}_{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}>\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}$, ██ █████████ ${\displaystyle \mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}$ █ ${\displaystyle \mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}$ ██ ██████ ████████████ █████████, ██████ █████████ █████████████;
3. ██ , ██ █████████ ${\displaystyle \mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}$ █ ${\displaystyle \mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}$ ██ ██████ ████████████ █████████, ██████ █████████ █████████████.

█████ ████████ ███ ████████████ ███ █████ ████ ██ ███████ ███ █████ ████████ █ ██████ █████████ (████████). ██ ██ ██ ███ ████████████ ███████████ ${\displaystyle \left(⟨\widehat{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}⟩\ne \mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}\right)}$ ███ ███ █████████ ${\displaystyle \mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}$ █ ${\displaystyle \mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}$:

${\displaystyle ⟨\widehat{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}⟩=⟨\widehat{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}\widehat{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}+\widehat{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}\widehat{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}⟩-\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}⟨\widehat{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}⟩⟨\widehat{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}⟩=⟨\left\{\widehat{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}},\widehat{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}\right\}⟩-\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}⟨\widehat{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}⟩⟨\widehat{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}⟩\ne \mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}$

███

${\displaystyle \widehat{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}=\widehat{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}\widehat{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}+\widehat{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}\widehat{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}-\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}⟨\widehat{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}⟩⟨\widehat{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}⟩=\left\{\widehat{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}},\widehat{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}\right\}-\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}⟨\widehat{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}⟩⟨\widehat{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}⟩}$

████ ${\displaystyle \left\{\widehat{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}},\widehat{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}\right\}\equiv \widehat{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}\widehat{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}+\widehat{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}\widehat{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}}$ ██████ █'████-███████████ ███ ███ █████████, ██ ███████ ███ ██████████████, ██████████ ██ █████ ███████████ ███ ████, ███████ ██ ██████ ██ █████████:

${\displaystyle {\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}_{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}\cdot {\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}_{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}⩾\frac{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}\sqrt{{\left|⟨[\widehat{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}},\widehat{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}]⟩\right|}^{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}+{\left|⟨\widehat{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}⟩\right|}^{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}}}$

█ █████████ ██████████ ███, ██ ██ ████████████ ███████████ █ ███████ ${\displaystyle \left(⟨\widehat{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}⟩=\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}\right)}$, ██ ██████████████ ██ ███████████ ██ ██████ █ ██████ ██ █████████:

${\displaystyle {\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}_{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}\cdot {\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}_{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}\ge \frac{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}\left|⟨\left[\widehat{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}},\widehat{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}\right]⟩\right|}$.