Bourbaki

Corollary 1

Tag 0D43, permanent. Cite it as [Bourbaki, Tag 0D43].

Commutative Algebra, chapter X, § 3. Profondeur et dimension homologique

For every multiplicative subset S of A , one has

dpS−1A(S−1M)≤dpA(M),diS−1A(S−1N)≤diA(N),dh(S−1A)≤dh(A). \mathrm{dp}_{S^{-1}A}(S^{-1}M) \leq \mathrm{dp}_A(M) \quad , \quad \mathrm{di}_{S^{-1}A}(S^{-1}N) \leq \mathrm{di}_A(N) \quad , \quad \mathrm{dh}(S^{-1}A) \leq \mathrm{dh}(A) .

Bourbaki puts the proof directly after the statement, so what is above is the statement and its proof together.

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Translated with machine help, not yet reviewed by a person.