Projective module (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Projective module" in English language version.

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2books.google.com

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archive.org (Global: 6^th place; English: 6^th place)

Exercises 4.11 and 4.12 and Corollary 6.6 of David Eisenbud, Commutative Algebra with a view towards Algebraic Geometry, GTM 150, Springer-Verlag, 1995. Also, Milne 1980 Milne, James (1980). Étale cohomology. Princeton Univ. Press. ISBN 0-691-08238-3.

books.google.com (Global: 3^rd place; English: 3^rd place)

Hazewinkel; et al. (2004). "Corollary 5.4.5". Algebras, Rings and Modules, Part 1. p. 131.
Hazewinkel; et al. (2004). "Remark after Corollary 5.4.5". Algebras, Rings and Modules, Part 1. pp. 131–132.

columbia.edu (Global: 488^th place; English: 374^th place)

stacks.math.columbia.edu

"Section 10.95 (05A4): Descending properties of modules—The Stacks project". stacks.math.columbia.edu. Retrieved 2022-11-03.

doi.org (Global: 2^nd place; English: 2^nd place)

Bass, Hyman (1963). "Big projective modules are free". Illinois Journal of Mathematics. 7 (1). Duke University Press. Corollary 4.5. doi:10.1215/ijm/1255637479.