Category:Definitions/Projective Modules
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This category contains definitions related to Projective Modules.
Related results can be found in Category:Projective Modules.
Let $A$ be a ring with unity.
Let $M$ be an $A$-module.
$M$ is projective if and only if there exists an $A$-module $N$ such that the direct sum $M \oplus N$ is a free module.
Pages in category "Definitions/Projective Modules"
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