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Ender Wiggins
  • Member for 5 years, 5 months
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5 votes
1 answer
205 views

Are projective modules related to projective spaces?

4 votes
0 answers
114 views

Lie algebra of a compact Lie group

4 votes
1 answer
540 views

How to prove that a faithful functor reflects exact sequences?

4 votes
1 answer
329 views

If the dual of a module is finitely generated and projective, can we claim that the module itself is?

4 votes
2 answers
240 views

Example of a bialgebra which is Frobenius but not Hopf

4 votes
1 answer
74 views

Does the category of topological spaces with an action of a topological monoid admit coequalizers?

3 votes
1 answer
141 views

When does taking the product $- \times X$ preserve reflexive coequalizers in $\mathsf{Top}$?

3 votes
0 answers
216 views

Coproduct of abelian groups

3 votes
0 answers
51 views

Is there a way of speaking about exact sequences in a category "nice enough" but without zero object?

3 votes
1 answer
90 views

Is there any reference treating explicitly Lie-Rinehart pairs over non-commutative base algebras?

3 votes
1 answer
56 views

Concerning the relationship between being projective as a bimodule and being projective as a left/right module

3 votes
1 answer
145 views

Convolution product on the linear dual of the polynomial algebra

3 votes
1 answer
132 views

A "concrete" example of a left Hopf algebra

3 votes
1 answer
129 views

Counterexample to the fundamental theorem of comodules

3 votes
1 answer
205 views

Coequalizers and kernel pairs

3 votes
0 answers
88 views

Tensor product of bialgebras in a braided monoidal category

2 votes
0 answers
25 views

When do equalizers preserve epis?

2 votes
0 answers
82 views

Relationship between Frobenius reciprocity, Frobenius algebras, Frobenius extensions and Frobenius functors

2 votes
1 answer
169 views

Does the tensor product preserve coreflexive equalizers?

2 votes
1 answer
104 views

Vanishing ideal of the fiber product of two affine sets

2 votes
1 answer
197 views

Is the class of dualizable objects in an abelian monoidal category closed under sums, kernels and cokernels?

2 votes
1 answer
145 views

Particular choice function without Axiom of Choice

2 votes
1 answer
63 views

How can I state the existence of inverses in order to define the variety of groups?

2 votes
1 answer
108 views

How to define exact sequences in a semi-abelian category

1 vote
1 answer
51 views

Understanding where my naive attempt to prove Countable Choice out of Finite Choice fails

1 vote
1 answer
95 views

If a category admits binary products and pullbacks, is it true that the product functor $Z \times -$ preserves pullbacks, for every object $Z$?

1 vote
0 answers
295 views

Reference request: the UEA of the LR-algebra of tangent vector fields on a smooth manifold coincides with the derivation ring and the ring of diff ops

1 vote
1 answer
84 views

Linearly recursive sequences

1 vote
0 answers
32 views

Is there an official terminology for functors that are adjoint up to a given functor?

1 vote
1 answer
88 views

Is the Drinfeld center of an abelian monoidal category still abelian?