Corollary 3
Tag 0E2X, permanent. Cite it as [Bourbaki, Tag 0E2X].
Algebra, chapter X, § 9. Complexes de Koszul
For to be zero for all , it is necessary and sufficient that the homothety with ratio in be bijective for , and that the homothety with ratio in be injective.
Bourbaki puts the proof directly after the statement, so what is above is the statement and its proof together.
Cited by
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Cites
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