Lemma 35.14.4. Let
\xymatrix{ X \ar[rr]_ f \ar[rd]_ p & & Y \ar[dl]^ q \\ & S }
be a commutative diagram of morphisms of schemes. Assume that
f is surjective, and syntomic (resp. smooth, resp. étale),
p is syntomic (resp. smooth, resp. étale).
Then q is syntomic (resp. smooth, resp. étale).
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