User Student

3

21

votes

1

answer

840

views

Definition of an n-category

Oct 25 at 1:44 Student 2,443

5

15

votes

2

answers

1k

views

Formal definition of homotopy type theory

lo.logic foundations definitions homotopy-type-theory

Oct 12 at 11:47 Peter LeFanu Lumsdaine 12.2k

5

12

votes

2

answers

805

views

A toy model in 0-d QFT

co.combinatorics quantum-field-theory perturbation-theory feynman-integral

Oct 17 '19 at 18:22 Qfwfq 20.4k

5

11

votes

3

answers

729

views

Does Morita theory hint higher modules for noncommutative ring?

higher-category-theory noncommutative-algebra noncommutative-rings morita-equivalence morita-theory

Jul 21 at 13:37 Theo Johnson-Freyd 46.4k

3

10

votes

3

answers

508

views

Subalgebra of a group algebra

gr.group-theory rt.representation-theory hopf-algebras noncommutative-algebra

Jun 3 '19 at 19:52 Marco Farinati 858

3

8

votes

1

answer

297

views

DW, state sum models, and fully extended TQFTs

at.algebraic-topology higher-category-theory qa.quantum-algebra quantum-groups topological-quantum-field-theory

Apr 20 at 19:46 Noah Snyder 24.2k

2

8

votes

3

answers

361

views

Classification of $\operatorname{Rep} D(G)$

rt.representation-theory finite-groups qa.quantum-algebra quantum-groups hopf-algebras

Dec 12 '19 at 18:01 Student 2,443

6

8

votes

1

answer

941

views

What do physicists mean by a topological quantum gravity theory

mp.mathematical-physics topological-quantum-field-theory gravity-theory

Nov 10 '19 at 2:21 AccidentalFourierTransform 1,689

2

7

votes

1

answer

232

views

Combinatorial meaning of Kazhdan-Lusztig-Stanley polynomial

ag.algebraic-geometry co.combinatorics rt.representation-theory higher-category-theory matroid-theory

Oct 2 at 14:36 Student 2,443

1

7

votes

2

answers

192

views

Representations of $D(G)$ as an object in the center of $\operatorname{Rep}(G)$

finite-groups qa.quantum-algebra quantum-groups hopf-algebras drinfeld-center

Dec 22 '19 at 4:02 Student 2,443

3

7

votes

3

answers

721

views

Meaning of A-infinity relations

ct.category-theory soft-question higher-category-theory fukaya-category

Oct 1 '19 at 19:44 Denis T. 2,721

2

6

votes

2

answers

495

views

1-dimensional pure gauge theory

mp.mathematical-physics topological-quantum-field-theory gauge-theory classifying-spaces quantization

Oct 14 '19 at 3:08 Student 2,443

1

5

votes

1

answer

197

views

Rank of a finite group and its representations

gr.group-theory rt.representation-theory finite-groups monoidal-categories completion

Dec 30 at 1:15 Benjamin Steinberg 29k

5

votes

2

answers

220

views

A specific property of bi-adjunction

ct.category-theory monads adjoint-functors

Nov 22 at 22:16 Qiaochu Yuan 103k

3

5

votes

0

answers

168

views

Cohomology without comonad?

homotopy-theory cohomology higher-category-theory universal-algebra monads

Nov 19 at 20:08 Student 2,443

2

5

votes

0

answers

75

views

Representations of 2-groups and quantum double constructions

qa.quantum-algebra quantum-field-theory characters groupoids higher-algebra

Sep 15 at 19:25 Student 2,443

4

5

votes

1

answer

245

views

Nowhere vanishing section implies reduction of structure group

riemannian-geometry vector-bundles holonomy obstruction-theory

Jun 13 at 18:02 Community♦ 1

1

5

votes

2

answers

392

views

Kan fibrant replacement for a sphere

at.algebraic-topology homotopy-theory

May 2 at 23:42 Phil Tosteson 2,752

4

5

votes

1

answer

179

views

Classification of $\operatorname{Rep}D(H)$

reference-request rt.representation-theory qa.quantum-algebra hopf-algebras topological-quantum-field-theory

Feb 11 '20 at 5:59 Konstantinos Kanakoglou 6,426

3

5

votes

1

answer

219

views

Combinatorial Skeleton of a Riemannian manifold

co.combinatorics graph-theory riemannian-geometry sp.spectral-theory trace-formula

Oct 31 '19 at 17:18 Sophie MacDonald 305

1

5

votes

0

answers

191

views

Poking into a Lie group with your finger

lie-groups fourier-analysis sp.spectral-theory perturbation-theory flows

Oct 24 '19 at 1:48 Student 2,443

1

5

votes

0

answers

76

views

Uniqueness of Witten-Dijkgraaf 2D TQFT at 0th dimension

higher-category-theory quantum-field-theory principal-bundles gauge-theory

Oct 14 '19 at 20:56 Student 2,443

4

5

votes

3

answers

314

views

Electromagnetism as a $U(1)$-gauge theory

reference-request characteristic-classes gauge-theory

Oct 9 '19 at 17:50 thedude 919

2

4

votes

0

answers

169

views

Cohomology and higher structures

ra.rings-and-algebras lie-algebras cohomology lie-algebra-cohomology higher-algebra

May 19 at 11:03 Student 2,443

1

4

votes

1

answer

153

views

Group representation with algebra structure

rt.representation-theory ra.rings-and-algebras topological-quantum-field-theory

Nov 21 '19 at 17:43 Community♦ 1

1

3

votes

1

answer

126

views

Do (co)density (co)monadic constructions stablize?

ct.category-theory homotopy-theory monads kan-extension

Dec 11 at 9:27 Gregory Arone 6,448

3

votes

1

answer

194

views

Is Cauchy completion the largest extension with the same free cocompletion?

ct.category-theory limits-and-colimits completion yoneda-lemma

Dec 10 at 10:02 Student 2,443

1

3

votes

0

answers

97

views

Can chain homotopy induce space homotopy at $E_\infty$ level?

at.algebraic-topology ct.category-theory higher-category-theory a-infinity-algebras

May 14 at 1:53 Student 2,443

3

votes

0

answers

90

views

Generalizing the heat kernel approach

ap.analysis-of-pdes differential-operators integral-kernel

Nov 9 '19 at 1:57 Student 2,443

3

votes

0

answers

78

views

Macdonald's idea of his kth weight

rt.representation-theory riemannian-geometry special-functions symmetric-functions

Sep 4 '19 at 23:12 Student 2,443

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43 Questions

Definition of an n-category

Formal definition of homotopy type theory

A toy model in 0-d QFT

Does Morita theory hint higher modules for noncommutative ring?

Subalgebra of a group algebra

DW, state sum models, and fully extended TQFTs

Classification of $\operatorname{Rep} D(G)$

What do physicists mean by a topological quantum gravity theory

Combinatorial meaning of Kazhdan-Lusztig-Stanley polynomial

Representations of $D(G)$ as an object in the center of $\operatorname{Rep}(G)$

Meaning of A-infinity relations

1-dimensional pure gauge theory

Rank of a finite group and its representations

A specific property of bi-adjunction

Cohomology without comonad?

Representations of 2-groups and quantum double constructions

Nowhere vanishing section implies reduction of structure group

Kan fibrant replacement for a sphere

Classification of $\operatorname{Rep}D(H)$

Combinatorial Skeleton of a Riemannian manifold

Poking into a Lie group with your finger

Uniqueness of Witten-Dijkgraaf 2D TQFT at 0th dimension

Electromagnetism as a $U(1)$-gauge theory

Cohomology and higher structures

Group representation with algebra structure

Do (co)density (co)monadic constructions stablize?

Is Cauchy completion the largest extension with the same free cocompletion?

Can chain homotopy induce space homotopy at $E_\infty$ level?

Generalizing the heat kernel approach

Macdonald's idea of his kth weight