Bourbaki

Corollary 1

Tag 006X, permanent. Cite it as [Bourbaki, Tag 006X].

Algebra, VIII, p. 99, § 6. Morita Equivalence of Modules and Algebras

The countermodule of a generating module is projective and finitely generated. The countermodule of a finitely generated projective module is generating.

Let A be a kk-algebra, and let M be an A-module. We denote the opposite kk-algebra of the algebra EndA(M)_A(M) by B. The corollary follows from Proposition 4 applied to the (A,B)k(A,B)_k-bimodule M.

Bourbaki sets the proof directly after the statement, and the corpus does not separate them, so what is above is the statement and its proof together.

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Transcribed from the printed edition, 2023, Springer Nature. Not translated.