Situation 37.64.1. Here $S$ is a scheme and $i : Z \to X$ and $j : Z \to Y$ are morphisms of schemes over $S$. We assume

$i$ is a closed immersion,

$j$ is an integral morphism of schemes,

for $y \in Y$ there exists an affine open $U \subset X$ with $j^{-1}(\{ y\} ) \subset i^{-1}(U)$.

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