Question

Higher self-extension $\text{Ext}^i_{\mathcal{O}}(L(\lambda), L(\lambda))$ between two irreducible modules in BGG category $\mathcal{O}$

score 212 · Answer 1 · 2026-04-17 02:11:57

212

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Higher self-extension $\text{Ext}^i_{\mathcal{O}}(L(\lambda), L(\lambda))$ between two irreducible modules in BGG category $\mathcal{O}$

Published on 17 Apr 2026 - 2:11

score 86 · Answer 2 · 2026-04-15 11:59:35

86

Views

3-dim Lie algebras

Published on 15 Apr 2026 - 11:59

score 633 · Answer 3 · 2026-04-13 07:01:55

633

Views

Defining Unitary Matrices

Published on 13 Apr 2026 - 7:01

score 121 · Answer 4 · 2026-04-14 23:10:44

121

Views

Particular on the structure of a weight $L$-module $M$, with $L$ semisimple Lie-algebra.

Published on 14 Apr 2026 - 23:10

score 193 · Answer 5 · 2026-04-23 04:52:56

193

Views

Compactification of Lie Group

Published on 23 Apr 2026 - 4:52

score 167 · Answer 6 · 2026-03-26 19:05:17

167

Views

Lie algebras isomorphism $gl(2,\mathbb{C}) \cong sl(2,\mathbb{C}) \oplus \mathbb{C}$

Published on 26 Mar 2026 - 19:05

score 214 · Answer 7 · 2026-04-14 04:30:18

214

Views

Exercise on representations of $\mathfrak{sl}_2 \mathbb{C}$ (Etingof 1.55.j)

Published on 14 Apr 2026 - 4:30

score 300 · Answer 8 · 2026-04-30 01:11:01

300

Views

Left multiplication isometry?

Published on 30 Apr 2026 - 1:11

score 47 · Answer 9 · 2026-04-12 18:28:20

47

Views

determining whether Lie algebra is enlarged by new generator

Published on 12 Apr 2026 - 18:28

score 927 · Answer 10 · 2026-04-22 11:59:27

927

Views

Computing the radical of $\mathfrak{gl}(2,\mathbb{C})$ without using the semisimplicity of $\mathfrak{sl}(2,\mathbb{C})$.

Published on 22 Apr 2026 - 11:59

score 245 · Answer 11 · 2026-04-12 20:31:09

245

Views

Matrix representation of a 6-dimensional Lie algebra

Published on 12 Apr 2026 - 20:31

score 849 · Answer 12 · 2026-04-14 01:14:10

849

Views

Every automorphism of $\mathfrak{sl}(2,\mathbb{C})$ is given by conjugation with some $u \in \mathrm{SL}(2,\mathbb{C})$

Published on 14 Apr 2026 - 1:14

score 566 · Answer 13 · 2026-04-11 21:57:34

566

Views

Computation of killing form

Published on 11 Apr 2026 - 21:57

score 733 · Answer 14 · 2016-01-30 11:34:37

733

Views

Connection between quivers and representations of Lie algebras

Published on 30 Jan 2016 - 11:34

score 177 · Answer 15 · 2026-04-11 18:59:07

177

Views

Another way of describing a maximal torus

Published on 11 Apr 2026 - 18:59

List Question

Higher self-extension $\text{Ext}^i_{\mathcal{O}}(L(\lambda), L(\lambda))$ between two irreducible modules in BGG category $\mathcal{O}$

3-dim Lie algebras

Defining Unitary Matrices

Particular on the structure of a weight $L$-module $M$, with $L$ semisimple Lie-algebra.

Compactification of Lie Group

Lie algebras isomorphism $gl(2,\mathbb{C}) \cong sl(2,\mathbb{C}) \oplus \mathbb{C}$

Exercise on representations of $\mathfrak{sl}_2 \mathbb{C}$ (Etingof 1.55.j)

Left multiplication isometry?

determining whether Lie algebra is enlarged by new generator

Computing the radical of $\mathfrak{gl}(2,\mathbb{C})$ without using the semisimplicity of $\mathfrak{sl}(2,\mathbb{C})$.

Matrix representation of a 6-dimensional Lie algebra

Every automorphism of $\mathfrak{sl}(2,\mathbb{C})$ is given by conjugation with some $u \in \mathrm{SL}(2,\mathbb{C})$

Computation of killing form

Connection between quivers and representations of Lie algebras

Another way of describing a maximal torus

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