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

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

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

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

${\displaystyle \cdots \to {\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}_{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}+\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}\stackrel{{\mathrm{\partial }}_{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}+\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}}{\to }{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}_{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}\stackrel{{\mathrm{\partial }}_{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}}{\to }{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}_{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}-\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}\to \cdots .}$

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

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

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

██ ██████ ████ ██ "█████████ █████ ██ ██████" ███ █████████ █████████ █████████ ██ █████████ ██ ████████

${\displaystyle \cdots \leftarrow {\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}_{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}+\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}^{\ast }\stackrel{{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}_{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}}{\leftarrow }{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}_{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}^{\ast }\stackrel{{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}_{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}-\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}}{\leftarrow }{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}_{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}-\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}^{\ast }\leftarrow \cdots .}$

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

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