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Overview
Propose
Stacks 01W3 (2)
theorem
Let $X$, $Y$, $Z$ be schemes, and possibly some arrows, satisfying the following conditions:
$f$ universally closed
$g$ universally closed
Then
$g*f$ universally closed
References
Stacks Project, https://stacks.math.columbia.edu/tag/01W3 (Fabio)
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