Jianrong Li's user avatar
Jianrong Li's user avatar
Jianrong Li's user avatar
Jianrong Li
  • Member for 13 years, 3 months
  • Last seen more than a week ago
3 votes
1 answer
123 views

Is $T(V) \rtimes T(V^* \otimes V)$ a bialgebra?

3 votes
2 answers
237 views

How to show that Yetter-Drinfeld condition is equialent to $\Psi$ is a braiding

3 votes
1 answer
148 views

Are all the Lie bialgebra structure on $sl_n$ coboundary?

3 votes
1 answer
659 views

Deformation of a Hopf algebra

3 votes
0 answers
169 views

Reference request: which elements in a Coxeter group has longest reflection length?

3 votes
0 answers
123 views

How to understand extremal vector?

3 votes
0 answers
127 views

How to compute the asymptotic of a summation which involves binomial coefficients?

3 votes
4 answers
346 views

References request: representations of classical groups

3 votes
1 answer
309 views

What is $\rho^{\vee}(-1)$?

3 votes
0 answers
59 views

Kernel of the map $\mathbb{C}[G]^U \to \mathbb{C}[U^+]$

3 votes
0 answers
109 views

What is the combinatorial rule from the array of integers to the semistandard Young tableau?

3 votes
1 answer
111 views

References request: Auslander-Reiten theory of algebras like $B_{k,n}$

2 votes
0 answers
95 views

How to define the limit of an infinite sequence of Newton polytopes rigorously?

2 votes
1 answer
215 views

Grassmannian $\mathrm{Gr}(k, \pm \infty)$ in infinite dimension

2 votes
0 answers
80 views

Reference request: additive basis of $\mathbb{C}[N]$

2 votes
0 answers
74 views

Berenstein-Fomin-Zelevinsky's Ininital seeds and initial seeds from Postnikov diagrams

2 votes
0 answers
91 views

Counting the number of weakly separated pairs

2 votes
0 answers
38 views

The coefficient $p_{c'}^{c}$ in a formula in Lusztig's canonical basis paper

2 votes
1 answer
116 views

Auslander-Reiten sequence and projective covers

2 votes
1 answer
157 views

How to show that $x_{k+1}+x_{k+2} + \cdots + x_n < 2m$?

2 votes
0 answers
60 views

Multiplication formula in Grassmannian cluster categories

2 votes
1 answer
149 views

How to estimate a summation?

2 votes
0 answers
89 views

Hilbert series of filtered algebras

2 votes
1 answer
2k views

How to estimate a total variation distance?

2 votes
0 answers
113 views

Imaginary roots in $\widetilde{E}_8$

2 votes
0 answers
119 views

How to write down solutions of Yang-Baxter equations for $sl_3$ explicitly?

2 votes
1 answer
177 views

Is the cross product $A \rtimes H$ a bialgebra?

2 votes
2 answers
276 views

Recover Poisson bracket on $C[G]$ using the Lie cobracket $\delta: g \to \Lambda^2 g$

2 votes
0 answers
146 views

Center of $U_q(sl_3)$ and $U_q(sl_4)$

2 votes
1 answer
228 views

How to compute $t_0$ and $r^0$ in Belavin-Drinfeld's classification of solutions of classical Yang-Baxter equations?

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