User Bruce Westbury

26

36

votes

5

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3k

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Is there an explicit construction of a free coalgebra?

Apr 13 '18 at 1:29 darij grinberg 29.8k

9

22

votes

3

answers

3k

views

Is there a combinatorial analogue of Ricci flow?

reference-request gt.geometric-topology ricci-flow

Mar 29 '18 at 7:27 Martin Sleziak 4,262

13

20

votes

1

answer

3k

views

Calculating 6j-symbols (aka Racah-Wigner coefficients) for quantum groups

quantum-groups monoidal-categories topological-quantum-field-theory

Mar 10 '10 at 1:03 CommunityBot 1

8

16

votes

0

answers

477

views

Does a symplectic group act on a tensor power of a spin representation?

co.combinatorics rt.representation-theory lie-groups invariant-theory

Dec 3 at 18:44 Sam Hopkins 16.4k

8

12

votes

1

answer

911

views

Can the Jacobi-Trudi identity be understood as a BGG resolution?

symmetric-functions homological-algebra reference-request

Jun 9 '10 at 12:36 Bruce Westbury 8,702

7

9

votes

2

answers

970

views

Can you find linear recurrence relation for dimensions of invariant tensors?

rt.representation-theory generating-functions symmetric-functions

Nov 4 '13 at 8:39 agtortorella 4,068

3

9

votes

0

answers

207

views

Are pivotal categories the algebras for a cartesian monad?

ct.category-theory operads monoidal-categories

Jul 11 '12 at 21:27 Mike Shulman 56.4k

2

9

votes

1

answer

495

views

Restriction of characters of hyperoctahedral groups.

symmetric-functions symmetric-groups

Nov 25 '11 at 13:18 CommunityBot 1

7

9

votes

1

answer

2k

views

Finding recurrence relation for a sequence of polynomials

generating-functions

Aug 5 '10 at 7:57 CommunityBot 1

1

8

votes

1

answer

183

views

Permutations and framed braids as cyclic operads

operads

Nov 3 '18 at 9:16 Adrien 7,327

4

8

votes

1

answer

607

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A q-analogue of Ramanujan's tau function

nt.number-theory modular-forms q-analogs

Nov 13 '15 at 11:10 CommunityBot 1

3

8

votes

1

answer

684

views

Representations of the three string braid group

braid-groups rt.representation-theory

Mar 9 '10 at 7:32 lieven lebruyn 3,967

4

8

votes

1

answer

575

views

From symmetric groups to symplectic groups?

gr.group-theory

Feb 15 '10 at 20:06 Marty 12.3k

3

7

votes

4

answers

828

views

Is the classification of finite p-groups a smooth problem?

gr.group-theory finite-groups computational-complexity

Feb 9 '14 at 2:47 CommunityBot 1

6

7

votes

1

answer

724

views

Is an irreducible holomorphic symplectic manifold a simple Lie algebra?

lie-algebras derived-categories

Jun 7 '12 at 8:14 Bruce Westbury 8,702

6

votes

1

answer

924

views

Exact arithmetic for real algebraic numbers

real-algebraic-geometry algorithms computational-complexity

Dec 12 '12 at 13:51 Dima Pasechnik 12.8k

4

6

votes

0

answers

345

views

Braid group action on canonical basis

qa.quantum-algebra braid-groups

May 3 '12 at 18:17 Bruce Westbury 8,702

2

6

votes

0

answers

189

views

What is the q-analogue of the Lefschetz decomposition?

quantum-groups

Aug 2 '10 at 13:22 CommunityBot 1

2

6

votes

2

answers

232

views

What is the explanation for the special form of representations of three string braid group constructed using quantum groups information supplied

quantum-groups rt.representation-theory braid-groups braided-tensor-categories

Mar 17 '10 at 6:05 Bruce Westbury 8,702

3

4

votes

0

answers

337

views

Counter example in Tannaka reconstruction?

rt.representation-theory ct.category-theory tannakian-category

May 31 '12 at 17:57 CommunityBot 1

1

4

votes

2

answers

720

views

What is known about the centraliser of the Hecke algebra in the affine Hecke algebra?

rt.representation-theory hecke-algebras symmetric-groups

Jun 11 '11 at 7:05 CommunityBot 1

4

votes

1

answer

339

views

Is there an account of the algebra of highest weight tensors?

reference-request rt.representation-theory young-tableaux

Nov 8 '10 at 3:17 Andy B 718

2

4

votes

0

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450

views

Working with quadratic Lie algebras

lie-algebras quantum-groups

Jul 1 '10 at 12:42 Bruce Westbury 8,702

1

4

votes

2

answers

720

views

What is the correct formulation of the CDE triangle?

characteristic-p ra.rings-and-algebras rt.representation-theory

Jun 23 '10 at 15:19 Ben Webster♦ 40.2k

1

3

votes

1

answer

327

views

Properties of nerve of strict n-groupoid

ct.category-theory higher-category-theory

Feb 7 '16 at 12:37 Ronnie Brown 11.7k

1

3

votes

0

answers

124

views

Is the quasisymmetric expansion of the inner product of two Schur functions known?

rt.representation-theory symmetric-functions

Jan 11 '13 at 19:18 Bruce Westbury 8,702

3

votes

1

answer

215

views

What is the definition of a discharge rule?

co.combinatorics graph-colorings

May 10 '12 at 3:31 Brendan McKay 32.9k

1

3

votes

1

answer

288

views

What is a left dual up to homotopy?

homotopy-theory koszul-duality

Mar 7 '11 at 17:41 CommunityBot 1

2

votes

2

answers

2k

views

If you went into a coma now and woke in twenty years time what would be your first post on MO? [closed]

big-list

Jul 10 '10 at 14:18 Angelo 25.8k

1

vote

1

answer

609

views

Hankel determinants of symmetric functions

symmetric-functions symmetric-groups determinants

Jun 16 '10 at 11:49 Emmanuel Briand 534

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30 Questions

Is there an explicit construction of a free coalgebra?

Is there a combinatorial analogue of Ricci flow?

Calculating 6j-symbols (aka Racah-Wigner coefficients) for quantum groups

Does a symplectic group act on a tensor power of a spin representation?

Can the Jacobi-Trudi identity be understood as a BGG resolution?

Can you find linear recurrence relation for dimensions of invariant tensors?

Are pivotal categories the algebras for a cartesian monad?

Restriction of characters of hyperoctahedral groups.

Finding recurrence relation for a sequence of polynomials

Permutations and framed braids as cyclic operads

A q-analogue of Ramanujan's tau function

Representations of the three string braid group

From symmetric groups to symplectic groups?

Is the classification of finite p-groups a smooth problem?

Is an irreducible holomorphic symplectic manifold a simple Lie algebra?

Exact arithmetic for real algebraic numbers

Braid group action on canonical basis

What is the q-analogue of the Lefschetz decomposition?

What is the explanation for the special form of representations of three string braid group constructed using quantum groups information supplied

Counter example in Tannaka reconstruction?

What is known about the centraliser of the Hecke algebra in the affine Hecke algebra?

Is there an account of the algebra of highest weight tensors?

Working with quadratic Lie algebras

What is the correct formulation of the CDE triangle?

Properties of nerve of strict n-groupoid

Is the quasisymmetric expansion of the inner product of two Schur functions known?

What is the definition of a discharge rule?

What is a left dual up to homotopy?

If you went into a coma now and woke in twenty years time what would be your first post on MO? [closed]

Hankel determinants of symmetric functions