Lemma 37.11.11. Let $f : X \to Y$, $g : Y \to S$ be morphisms of schemes. Assume $f$ is formally smooth. Then
(see Morphisms, Lemma 29.32.9) is short exact.
Lemma 37.11.11. Let $f : X \to Y$, $g : Y \to S$ be morphisms of schemes. Assume $f$ is formally smooth. Then
(see Morphisms, Lemma 29.32.9) is short exact.
Proof. The algebraic version of this lemma is the following: Given ring maps $A \to B \to C$ with $B \to C$ formally smooth, then the sequence
of Algebra, Lemma 10.131.7 is exact. This is Algebra, Lemma 10.138.9. $\square$
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