James Cheung's user avatar
James Cheung's user avatar
James Cheung's user avatar
James Cheung
  • Member for 6 years, 9 months
  • Last seen more than a month ago
  • Hong Kong
10 votes
2 answers
904 views

Strange formulas that gave rise to Koszul duality

8 votes
1 answer
539 views

History of the study of Verma modules in terms of Kazhdan Lusztig Theory

5 votes
0 answers
113 views

Progress on the result about montonicity of Kazhdan Lustzig polynomials

5 votes
2 answers
225 views

Maximum number of half great circles of length $\pi$ can be drawn on a sphere without any intersection

5 votes
1 answer
183 views

Parabolic Kazhdan-Lusztig polynomial coincide?

4 votes
2 answers
324 views

Each $w\in W$ can be expressed as product of distinct reflections?

4 votes
0 answers
62 views

About isomorphism of Extension groups between Category $\mathcal{O}^\mathfrak{p}$ and $\mathcal{O}$

4 votes
0 answers
154 views

Extension of Verma modules

4 votes
2 answers
462 views

About parabolic Kazhdan Lusztig polynomials

4 votes
1 answer
337 views

Kazhdan–Lusztig polynomials in terms of Ext groups

4 votes
1 answer
600 views

Parabolic Kazhdan-Lusztig Conjecture

4 votes
1 answer
340 views

Verma module and vanishing of extension groups

4 votes
0 answers
99 views

About the geometry of the set of weights that is strongly linked to $\lambda$

3 votes
0 answers
133 views

Doubt concerning certain Extension groups

3 votes
2 answers
338 views

Partial ordering on $\mathfrak{h}^*$ and Bruhat ordering

3 votes
0 answers
101 views

Kazhdan-Lusztig polynomials and the defect of a Bruhat interval

3 votes
0 answers
90 views

Accuracy of solutions of system of multivariable polynomials

3 votes
1 answer
159 views

Bruhat ordering and non-vanishing Extension groups

3 votes
1 answer
93 views

Distance between Verma modules in certain "strongly" standard filtrations

3 votes
1 answer
378 views

About the setting of the book "Representations of Semisimple Lie Algebras in the BGG Category $\mathcal{O}$"

3 votes
1 answer
118 views

Translation functor on parabolic Verma module

3 votes
1 answer
395 views

Looking for access to original paper for Category O

3 votes
0 answers
57 views

Question about Ext group in $\mathcal{O}^\mathfrak{p}$?

3 votes
0 answers
110 views

Relationship bewteen Kazhdan-Lusztig Vogan polynomial and Kazhdan-Lusztig polynomial

2 votes
2 answers
576 views

About block of category $\mathcal{O}$

2 votes
0 answers
36 views

About Extension group in Category $\mathcal{O}^\mathfrak{p}$

2 votes
1 answer
102 views

About Kazhdan-Lusztig polynomial

2 votes
1 answer
60 views

About Extension group and weights in $\mathcal{O}^\mathfrak{p}$

2 votes
2 answers
548 views

Verma modules in category $\mathcal{O}^\mathfrak{p}$

2 votes
1 answer
189 views

About composition factors of Verma modules