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15
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Notation for multilinear maps

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#vector-spaces #notation #modules #multilinear-algebra
43
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Left vs right ring module definitions

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#abstract-algebra #ring-theory #modules
288
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Prove that an epimorphism in $\text{Mod}_R$ is surjective

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#abstract-algebra #category-theory #modules #graded-rings #graded-modules
43
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'zero elements in different degrees are considered distinct' in graded rings/modules.. how does this work?

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#modules #terminology #definition #graded-rings
44
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What is $Hom_A(A/I,M)$?

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#abstract-algebra #modules #ideals
82
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Irreducible representations of finite abelian groups over an arbitrary field

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#ring-theory #finite-groups #modules #representation-theory
106
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Question about proof of problem 10.3.21 in Dummit and Foote.

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#abstract-algebra #solution-verification #modules #direct-sum
37
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When is the support of a module union of some irreducible components?

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#abstract-algebra #algebraic-geometry #commutative-algebra #modules
88
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Injectivity of the ring of formal power series over itself

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#abstract-algebra #modules #homological-algebra #injective-module
33
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Justifying a factor in matrix product is the zero matrix.

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#linear-algebra #modules
75
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"Any $\mathrm{End}(S)$-module is of the form $W\otimes S$"

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#abstract-algebra #modules #tensor-products
44
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An extension of a ring by a module has a section if and only if it is the trivial extension

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#commutative-algebra #modules
31
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When ${\mathbb{R}}^X$ is a multiplication $C(X)$-module?

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#commutative-algebra #modules
53
Views

Non trivial extensions of the zero map

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#modules #homological-algebra #exact-sequence
71
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Equivalence of categories: inclusion preservation

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#abstract-algebra #category-theory #modules #representation-theory #inclusion-exclusion

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