User Student

3

21

votes

1

answer

811

views

Definition of an n-category

Oct 25 at 1:44 Student 2,267

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

789

views

A toy model in 0-d QFT

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

Oct 17 '19 at 18:22 Qfwfq 20.3k

5

11

votes

3

answers

721

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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 46.1k

3

10

votes

3

answers

505

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

278

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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

357

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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 2,267

6

8

votes

1

answer

910

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 1,617

2

7

votes

1

answer

228

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 2,267

1

7

votes

2

answers

186

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 2,267

3

7

votes

3

answers

704

views

Meaning of A-infinity relations

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

Oct 1 '19 at 19:44 Denis T. 2,669

2

6

votes

2

answers

479

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1-dimensional pure gauge theory

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

Oct 14 '19 at 3:08 Student 2,267

5

votes

2

answers

211

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A specific property of bi-adjunction

ct.category-theory monads adjoint-functors

Nov 22 at 22:16 Qiaochu Yuan 100k

3

5

votes

0

answers

160

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Cohomology without comonad?

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

Nov 19 at 20:08 Student 2,267

2

5

votes

0

answers

74

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 2,267

4

5

votes

1

answer

236

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

387

views

Kan fibrant replacement for a sphere

at.algebraic-topology homotopy-theory

May 2 at 23:42 Phil Tosteson 2,667

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 at 5:59 Konstantinos Kanakoglou 6,302

3

5

votes

1

answer

216

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

190

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 2,267

1

5

votes

0

answers

75

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 2,267

4

5

votes

3

answers

303

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

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Cohomology and higher structures

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

May 19 at 11:03 Student 2,267

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

0

answers

67

views

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

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

Nov 22 at 21:50 Student 2,267

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 2,267

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 2,267

1

3

votes

0

answers

56

views

Transformation between nearby tangent planes [closed]

dg.differential-geometry lie-groups riemannian-geometry geodesics

Apr 30 '19 at 16:35 Student 2,267

2

votes

0

answers

86

views

Definition of a moment map with physical context

mp.mathematical-physics sg.symplectic-geometry classical-mechanics symmetry moment-map

Dec 5 '19 at 13:05 Student 2,267

1

2

votes

0

answers

89

views

Classical Hecke operators and Hecke algebra of type $A_1$

rt.representation-theory modular-forms p-adic-groups hecke-algebras

Nov 9 '19 at 20:51 Student 2,267

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38 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

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?

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

Generalizing the heat kernel approach

Transformation between nearby tangent planes [closed]

Definition of a moment map with physical context

Classical Hecke operators and Hecke algebra of type $A_1$