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██████████ ███████ ██████ ███████ ███ █████ ███████ ███████ ██████████, ██████ █████ ██████ ██████ ████████ ██ █████ ██████████ ██ █████. ██████ ███████ █████ ██ █████ ██████████ ███████ ██ █████.

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

██ ███ ██████ ██ ██████ ██████, ████ ██ ██████ ████████ ███████ █████████ █████ █████, ████ ██████ ███ ███ ██████ █████ ███ - █████ "█████" █████ ██████ ███████, █████ ███ █████ ██████ ██████. █████ ██ ██████ █████ ██ ██████ ██████ ███████.

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

█████ █████ ██ ████ ██████ ███████ █████ ███: ██████ ███ ██████ ██████ ██ ██████ ████ ██████████ ${\displaystyle [\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}],[\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}]}$, ████ ██████ ${\displaystyle \mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}\in [\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}]}$ █- ${\displaystyle \mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}\in [\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}]}$. █████ ██ ${\displaystyle \mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}\ast \mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}$ █████ ██████ ███ ████ "███████" █-█, █████ ███ "███████" █-█. █████ ██████, ████ ${\displaystyle \mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}\le \mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}\le \frac{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}}$ █████ ${\displaystyle (\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}\ast \mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>})(\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>})=\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}(\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>})}$ (█████ ██████ ███ ██████ ██ █ █"██████ █████), █████ ${\displaystyle \frac{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}\le \mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}\le \mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}$ █████ ${\displaystyle (\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}\ast \mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>})(\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>})=\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}(\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}-\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>})}$ (█████ ██████ ███ ██████ ██ █ █"██████ █████"). █████, █████ ${\displaystyle [\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}]\ast [\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}]=[\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}\ast \mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}]}$. ██ ██████ █████ ██████ █████ █████ ██████ █████████, ${\displaystyle {\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}^{\prime }\in [\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}],{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}^{\prime }\in [\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}]}$ ██████ ${\displaystyle {\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}^{\prime }\ast {\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}^{\prime }\in [\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}\ast \mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}]}$. █████, ██ ██ ██████ ██ ██████ █████ █████ ██████ █████, ██ ███████ ██████ █████ █████ ██████ █████████. ███ █████ ██████ ████ █████ ███████ ██ ██████ ███████ ██ ███████. ██ ███ ██████ ██████ ██ ███ █████ ████ ██ █████. █████ ████████ ███ ████████ ██████ ${\displaystyle \mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}(\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>})={\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}_{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}}$ (█████: █████ - ██████ ███████████), ███████ ██████ █ █████ ██ ███ ${\displaystyle {\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}^{-\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}(\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>})=\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}(\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}-\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>})}$ - █████ "███████" █████ █ ██████ █████.

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

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

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

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

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

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

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