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New posts in projective-module
Non-finitely generated R-module
abstract-algebra
ring-theory
modules
noetherian
projective-module
Showing an ideal is a projective module via a split exact sequence
commutative-algebra
algebraic-number-theory
homological-algebra
ideals
projective-module
Characterization of projective and injective modules
modules
projective-module
injective-module
Finitely generated flat modules that are not projective
modules
projective-module
If the tensor product of two modules is free of finite rank, then the modules are finitely generated and projective
abstract-algebra
commutative-algebra
modules
projective-module
finitely-generated
Finitely generated projective module
commutative-algebra
modules
projective-module
Finitely generated projective modules are locally free
projective-module
commutative-algebra
Origin of the terminology projective module
abstract-algebra
modules
terminology
projective-module
Is a finitely generated projective module a direct summand of a *finitely generated* free module?
abstract-algebra
ring-theory
modules
noncommutative-algebra
projective-module
Is a stably free module always free? [duplicate]
abstract-algebra
modules
projective-module
A problem about an $R$-module that is both injective and projective.
abstract-algebra
modules
homological-algebra
projective-module
injective-module
Prove that $\operatorname{Hom}_{\Bbb{Z}}(\Bbb{Q},\Bbb{Z}) = 0$ and show that $\Bbb{Q}$ is not a projective $\Bbb{Z}$-module.
abstract-algebra
modules
proof-verification
projective-module
Projective module over a PID is free? [duplicate]
abstract-algebra
commutative-algebra
projective-module
Calculating Ext and Tor for $\mathbb Z/m\mathbb Z$ and $\mathbb Z/n\mathbb Z$
homology-cohomology
projective-module
Why isn't an infinite direct product of copies of $\Bbb Z$ a free module?
abstract-algebra
modules
projective-module
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