Item 2 (01DN) — 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.

The Cone. The maps
\begin{align*} \text{pr}_{1} & \colon A\times B\to A,\\ \text{pr}_{2} & \colon A\times B\to B \end{align*}

defined by

\begin{align*} \text{pr}_{1}\webleft (a,b\webright ) & \mathrel {\smash {\overset {\mathclap {\scriptscriptstyle \text{def}}}=}}a,\\ \text{pr}_{2}\webleft (a,b\webright ) & \mathrel {\smash {\overset {\mathclap {\scriptscriptstyle \text{def}}}=}}b \end{align*}

for each $\webleft (a,b\webright )\in A\times B$.

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