User Jianrong Li

42 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

2k views

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

asked Mar 30, 2019 at 13:10

16 votes

4 answers

3k views

Decompose tensor product of type $G_2$ Lie algebras.

asked Jan 13, 2012 at 16:41

14 votes

1 answer

568 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

424 views

Compatibility conditions for Yetter-Drinfeld modules

asked Jun 15, 2016 at 14:40

8 votes

1 answer

1k views

PBW basis and canonical basis

asked Jun 23, 2014 at 7:14

8 votes

3 answers

529 views

How to use Hilbert series to count combinatorial objects?

asked May 7, 2017 at 15:47

8 votes

1 answer

615 views

Bernstein–Zelevinsky classification for classical groups

asked Oct 15, 2016 at 9:56

8 votes

2 answers

976 views

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

asked Oct 16, 2016 at 9:28

7 votes

1 answer

185 views

How to translate multi-segments to Drinfeld polynomials?

asked Sep 20, 2016 at 11:04

6 votes

1 answer

493 views

Reference request: type C, D Catalan numbers

asked Apr 26, 2017 at 16:59

6 votes

1 answer

300 views

What is the status of a problem about cluster categories?

asked Sep 15, 2017 at 8:36

6 votes

1 answer

255 views

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

asked Dec 24, 2014 at 8:29

6 votes

2 answers

369 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

5 votes

1 answer

498 views

Percolation in Cayley graphs of semigroups.

asked Mar 5, 2011 at 17:21

5 votes

1 answer

303 views

Center of quantum affine algebras

asked Oct 20, 2015 at 2:06

5 votes

1 answer

429 views

Crystal basis for quantum groups and Lie algebras

asked Jun 3, 2016 at 12:33

5 votes

2 answers

533 views

Do we have super Plucker relations for a super Grassmannian?

asked Jun 4, 2016 at 7:36

5 votes

1 answer

156 views

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

asked May 6, 2016 at 3:35

5 votes

1 answer

929 views

Definition of orthosymplectic supergroups

asked Mar 11, 2017 at 15:19

5 votes

1 answer

195 views

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

asked Jul 17, 2019 at 17:41

5 votes

0 answers

224 views

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

asked Dec 5, 2019 at 9:17

5 votes

1 answer

402 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

217 views

Distance of two points in Grassmannian using Plücker coordinate

asked Jul 10, 2020 at 9:41

4 votes

1 answer

183 views

Reference request: additive basis of coordinate ring of Grassmannians

asked May 4, 2019 at 15:15

4 votes

2 answers

254 views

How to compute the inverse of a quantum determinant?

asked Nov 3, 2018 at 16:26

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

Compatibility conditions for Yetter-Drinfeld modules

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

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?

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.

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?

Definition of orthosymplectic supergroups

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?