User Chris Schommer-Pries

6 votes

TQFT and Mapping Class Groups

answered May 8, 2016 at 15:40

5 votes

Accepted

Pull-back of a fibration along a homotopy equivalence and homotopy classes of sections

answered Jul 9, 2015 at 15:58

5 votes

An orthogonal factorization system on 1-Cob?

answered Jul 31, 2014 at 9:45

5 votes

Drinfeld center of a Deligne tensor product

answered Aug 25, 2021 at 16:42

5 votes

2-groups are to crossed modules as 2-categories are to...?

answered Aug 16, 2010 at 13:50

5 votes

Accepted

Can there exist two non-equivalent equivariant actions of a group on vector bundle?

answered Feb 10, 2010 at 15:50

5 votes

Representablity of Cohomology Ring

answered Oct 20, 2009 at 3:20

4 votes

Base change for category objects in topological spaces

answered Oct 20, 2009 at 4:21

4 votes

Spin structures on 7-dimensional spherical space forms

answered Dec 7, 2009 at 20:36

4 votes

Common Computations in Group Cohomology

answered Feb 18, 2010 at 19:38

4 votes

Accepted

How strict can I be in the definition of "2-group"?

answered Feb 16, 2010 at 21:22

4 votes

Accepted

Why is the category of strong braided functors from the braid category to a braided monoidal $M$ equivalent to the subcategory of strict functors?

answered Oct 20, 2022 at 21:26

4 votes

Accepted

Is a left Bousfield localization of simplicial presheaves a locally cartesian closed model category?

answered Aug 21, 2023 at 14:21

4 votes

Accepted

An explicit expression for the naturality of the Serre automorphism in the bicategory of algebras

answered Oct 9, 2020 at 21:04

4 votes

Internal Hom of Deligne' tensor product

answered Nov 21, 2017 at 19:29

3 votes

weak version of a Baez-Crans 2-vector space?

answered Aug 5, 2014 at 14:09

3 votes

Accepted

Given a map of classifying spaces, can the target be described as a groupoid quotient of the source mod some action of some (co)kernel?

answered Apr 14, 2015 at 11:22

3 votes

Accepted

Essentially zero inverse system of abelian groups

answered Feb 6, 2023 at 17:50

3 votes

Accepted

Is there a sensible way to enrich over SymMonCat such that id_X is not the monoidal unit?

answered Nov 10, 2010 at 3:16

3 votes

Topologists loops versus algebraists loops

answered Feb 26, 2010 at 13:19

3 votes

Two definitions of Calabi-Yau manifolds

answered Feb 11, 2010 at 18:53

3 votes

Accepted

The sharp 3x3 lemma: a proof by universal properties?

answered Feb 2, 2010 at 14:35

3 votes

Why aren't all small categories accessible?

answered Jan 9, 2010 at 20:24

3 votes

Is there a complex structure on the 6-sphere?

answered Oct 22, 2009 at 23:21

2 votes

Integration in equivariant K-theory

answered Dec 29, 2009 at 20:55

2 votes

Accepted

Principal bundle for contractible group is weak homotopy equivalence for ind schemes

answered Feb 26, 2010 at 14:51

2 votes

Accepted

Are hammock localizations locally truncated?

answered Nov 18, 2021 at 21:46

2 votes

Detecting nonorientability

answered Dec 3, 2020 at 22:00

2 votes

Accepted

Braided monoidal category, example

answered Mar 26, 2021 at 20:24

2 votes

Accepted

$\Omega$ and $B$ as adjoints between symmetric monoidal $(\infty,n)$- and $(\infty,n-1)$-categories

answered May 1, 2014 at 12:09

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127 Answers

TQFT and Mapping Class Groups

Pull-back of a fibration along a homotopy equivalence and homotopy classes of sections

An orthogonal factorization system on 1-Cob?

Drinfeld center of a Deligne tensor product

2-groups are to crossed modules as 2-categories are to...?

Can there exist two non-equivalent equivariant actions of a group on vector bundle?

Representablity of Cohomology Ring

Base change for category objects in topological spaces

Spin structures on 7-dimensional spherical space forms

Common Computations in Group Cohomology

How strict can I be in the definition of "2-group"?

Why is the category of strong braided functors from the braid category to a braided monoidal $M$ equivalent to the subcategory of strict functors?

Is a left Bousfield localization of simplicial presheaves a locally cartesian closed model category?

An explicit expression for the naturality of the Serre automorphism in the bicategory of algebras

Internal Hom of Deligne' tensor product

weak version of a Baez-Crans 2-vector space?

Given a map of classifying spaces, can the target be described as a groupoid quotient of the source mod some action of some (co)kernel?

Essentially zero inverse system of abelian groups

Is there a sensible way to enrich over SymMonCat such that id_X is not the monoidal unit?

Topologists loops versus algebraists loops

Two definitions of Calabi-Yau manifolds

The sharp 3x3 lemma: a proof by universal properties?

Why aren't all small categories accessible?

Is there a complex structure on the 6-sphere?

Integration in equivariant K-theory

Principal bundle for contractible group is weak homotopy equivalence for ind schemes

Are hammock localizations locally truncated?

Detecting nonorientability

Braided monoidal category, example

$\Omega$ and $B$ as adjoints between symmetric monoidal $(\infty,n)$- and $(\infty,n-1)$-categories