User Jianrong Li

41 votes

6 answers

7k views

Why we need to study representations of matrix groups?

asked Jan 6, 2014 at 14:41

17 votes

4 answers

1k views

Reference request: Grassmannian and Plucker coordinates in type B, C, D

asked Mar 30, 2019 at 13:10

16 votes

4 answers

2k views

Decompose tensor product of type $G_2$ Lie algebras.

asked Jan 13, 2012 at 16:41

14 votes

1 answer

534 views

Is there some relation between cluster algebras and crystal graphs?

asked May 9, 2017 at 13:18

11 votes

3 answers

1k views

The concept "conjugate class" in monoids.

asked Jan 14, 2011 at 19:12

10 votes

2 answers

1k views

Relations between affine Grassmannian and Grassmannian

asked Dec 30, 2013 at 8:24

9 votes

2 answers

1k views

Algebra in a category

asked Aug 5, 2016 at 14:55

8 votes

1 answer

1k views

PBW basis and canonical basis

asked Jun 23, 2014 at 7:14

8 votes

3 answers

506 views

How to use Hilbert series to count combinatorial objects?

asked May 7, 2017 at 15:47

8 votes

1 answer

592 views

Bernstein–Zelevinsky classification for classical groups

asked Oct 15, 2016 at 9:56

8 votes

2 answers

913 views

Relation between representations of p-adic groups and affine Hecke algebras

asked Oct 16, 2016 at 9:28

7 votes

1 answer

384 views

Compatibility conditions for Yetter-Drinfeld modules

asked Jun 15, 2016 at 14:40

6 votes

1 answer

252 views

Questions about the $\mathbf{i}$-trails of Berenstein and Zelevinsky

asked Dec 24, 2014 at 8:29

6 votes

2 answers

346 views

Questions about $\mathbb{C}[G/U^-]$ and $\mathbb{C}[B]$

asked Sep 6, 2015 at 2:16

6 votes

3 answers

1k views

Reference request: representation of type G2 Lie algebras.

asked Oct 18, 2011 at 20:17

6 votes

1 answer

172 views

How to translate multi-segments to Drinfeld polynomials?

asked Sep 20, 2016 at 11:04

6 votes

1 answer

457 views

Reference request: type C, D Catalan numbers

asked Apr 26, 2017 at 16:59

6 votes

1 answer

291 views

What is the status of a problem about cluster categories?

asked Sep 15, 2017 at 8:36

5 votes

1 answer

494 views

Percolation in Cayley graphs of semigroups.

asked Mar 5, 2011 at 17:21

5 votes

1 answer

283 views

Center of quantum affine algebras

asked Oct 20, 2015 at 2:06

5 votes

1 answer

413 views

Crystal basis for quantum groups and Lie algebras

asked Jun 3, 2016 at 12:33

5 votes

2 answers

511 views

Do we have super Plucker relations for a super Grassmannian?

asked Jun 4, 2016 at 7:36

5 votes

1 answer

150 views

How to write the map $ℂ[G/U]↪ℂ[B]$ explicitly?

asked May 6, 2016 at 3:35

5 votes

1 answer

188 views

Number of real roots in type $\tilde{E}_8$

asked Jul 17, 2019 at 17:41

5 votes

0 answers

209 views

Reference about the root systems $E_{n}$, $n \ge 10$

asked Dec 5, 2019 at 9:17

5 votes

1 answer

397 views

How to check that whether or not a surface is a K3 surface?

asked Aug 26, 2018 at 6:52

5 votes

0 answers

204 views

Distance of two points in Grassmannian using Plücker coordinate

asked Jul 10, 2020 at 9:41

4 votes

1 answer

179 views

Reference request: additive basis of coordinate ring of Grassmannians

asked May 4, 2019 at 15:15

4 votes

2 answers

247 views

How to compute the inverse of a quantum determinant?

asked Nov 3, 2018 at 16:26

4 votes

1 answer

533 views

How to obtain a classical r-matrix from a quantum R-matrix?

asked May 17, 2016 at 12:31

Stack Exchange Network

210 Questions

Why we need to study representations of matrix groups?

Reference request: Grassmannian and Plucker coordinates in type B, C, D

Decompose tensor product of type $G_2$ Lie algebras.

Is there some relation between cluster algebras and crystal graphs?

The concept "conjugate class" in monoids.

Relations between affine Grassmannian and Grassmannian

Algebra in a category

PBW basis and canonical basis

How to use Hilbert series to count combinatorial objects?

Bernstein–Zelevinsky classification for classical groups

Relation between representations of p-adic groups and affine Hecke algebras

Compatibility conditions for Yetter-Drinfeld modules

Questions about the $\mathbf{i}$-trails of Berenstein and Zelevinsky

Questions about $\mathbb{C}[G/U^-]$ and $\mathbb{C}[B]$

Reference request: representation of type G2 Lie algebras.

How to translate multi-segments to Drinfeld polynomials?

Reference request: type C, D Catalan numbers

What is the status of a problem about cluster categories?

Percolation in Cayley graphs of semigroups.

Center of quantum affine algebras

Crystal basis for quantum groups and Lie algebras

Do we have super Plucker relations for a super Grassmannian?

How to write the map $ℂ[G/U]↪ℂ[B]$ explicitly?

Number of real roots in type $\tilde{E}_8$

Reference about the root systems $E_{n}$, $n \ge 10$

How to check that whether or not a surface is a K3 surface?

Distance of two points in Grassmannian using Plücker coordinate

Reference request: additive basis of coordinate ring of Grassmannians

How to compute the inverse of a quantum determinant?

How to obtain a classical r-matrix from a quantum R-matrix?