Item 1 (01N9) — The Clowder Project

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Style	Class	Font	Theorem Environments
Style 1	`book`	Alegreya Sans	`tcbthm`
Style 2	`book`	Alegreya Sans	`amsthm`
Style 3	`book`	Arno*	`amsthm`
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*To be replaced with Linus Romer's Elemaints when it is released.

Interaction With Direct Images. Let $f\colon X\to X'$ and $g\colon Y\to Y'$ be functions. The diagram

commutes, i.e. we have

\[ \webleft [f_{*}\times g_{*}\webright ]\webleft (U\boxtimes _{X\times Y}V\webright )=f_{*}\webleft (U\webright )\boxtimes _{X'\times Y'}g_{*}\webleft (V\webright ) \]

for each $\webleft (U,V\webright )\in \mathcal{P}\webleft (X\webright )\times \mathcal{P}\webleft (Y\webright )$.

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