Question

Existence of toral subalgebra

score 260 · Answer 1 · 2019-06-12 21:27:36

260

Views

Existence of toral subalgebra

Published on 12 Jun 2019 - 21:27

score 179 · Answer 2 · 2019-06-13 16:28:48

179

Views

Determine the algebra of derivations of the complex general linear Lie algebra

Published on 13 Jun 2019 - 16:28

score 885 · Answer 3 · 2026-03-27 10:24:27

885

Views

Why can linear operators have $[A,B]=I$ in infinite dimensions when it is impossible in finite dimensions?

Published on 27 Mar 2026 - 10:24

score 259 · Answer 4 · 2026-03-27 13:47:25

259

Views

Decomposition of semi-simple Lie algebra into simple lie algebra (or ideal?)

Published on 27 Mar 2026 - 13:47

score 379 · Answer 5 · 2026-03-25 11:16:10

379

Views

How can one determine the dimension of a Lie algebra from the attached root system?

Published on 25 Mar 2026 - 11:16

score 230 · Answer 6 · 2026-03-24 23:44:34

230

Views

Free presentations of Weyl groups

Published on 24 Mar 2026 - 23:44

score 72 · Answer 7 · 2026-03-25 11:12:40

72

Views

How to compute the $\alpha_i$ string through $\alpha_j$?

Published on 25 Mar 2026 - 11:12

score 33 · Answer 8 · 2019-06-16 08:44:42

33

Views

Reference with results for common Lie algebras

Published on 16 Jun 2019 - 8:44

score 104 · Answer 9 · 2026-03-27 00:10:23

104

Views

In Cartan decomposition, we have direct sum of vector spaces, no Lie algebras, right?

Published on 27 Mar 2026 - 0:10

score 33 · Answer 10 · 2026-03-27 09:57:06

33

Views

$\mathfrak{u}(2)=\{S \in Mat(n,\mathbb{C}) | S^{\dagger}=-S \}$ generators

Published on 27 Mar 2026 - 9:57

score 233 · Answer 11 · 2026-03-20 01:46:30

233

Views

Virasoro algebra question: Is there a two-surface in Diff($S^1$) with a non-zero integral over the cocycle in $H^2(\mathfrak{g}, \mathbb{C})$?

Published on 20 Mar 2026 - 1:46

score 183 · Answer 12 · 2026-03-25 17:39:38

183

Views

Closure under Lie Bracket -- how is $c''(0)$ promoted to $(f\circ c)''(0)$

Published on 25 Mar 2026 - 17:39

score 677 · Answer 13 · 2026-03-25 11:12:13

677

Views

Computing all the roots from the Cartan matrix

Published on 25 Mar 2026 - 11:12

score 62 · Answer 14 · 2019-06-17 17:24:15

62

Views

How to calculate $H^0(\mathfrak g)$?

Published on 17 Jun 2019 - 17:24

score 69 · Answer 15 · 2026-03-27 09:45:32

69

Views

Dimension of the orthogonal algebra?

Published on 27 Mar 2026 - 9:45

List Question

Existence of toral subalgebra

Determine the algebra of derivations of the complex general linear Lie algebra

Why can linear operators have $[A,B]=I$ in infinite dimensions when it is impossible in finite dimensions?

Decomposition of semi-simple Lie algebra into simple lie algebra (or ideal?)

How can one determine the dimension of a Lie algebra from the attached root system?

Free presentations of Weyl groups

How to compute the $\alpha_i$ string through $\alpha_j$?

Reference with results for common Lie algebras

In Cartan decomposition, we have direct sum of vector spaces, no Lie algebras, right?

$\mathfrak{u}(2)=\{S \in Mat(n,\mathbb{C}) | S^{\dagger}=-S \}$ generators

Virasoro algebra question: Is there a two-surface in Diff($S^1$) with a non-zero integral over the cocycle in $H^2(\mathfrak{g}, \mathbb{C})$?

Closure under Lie Bracket -- how is $c''(0)$ promoted to $(f\circ c)''(0)$

Computing all the roots from the Cartan matrix

How to calculate $H^0(\mathfrak g)$?

Dimension of the orthogonal algebra?

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