Situation 87.21.11. Let $P$ be a local property of morphisms of $\textit{WAdm}^{count}$, see Situation 87.21.2. We say $P$ is *stable under composition* if given $B \to A$ and $C \to B$ in $\textit{WAdm}^{count}$ we have $P(B \to A) \wedge P(C \to B) \Rightarrow P(C \to A)$.

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