Question

4th generator of U(2)

score 552 · Answer 1 · 2018-10-23 22:10:01

552

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4th generator of U(2)

Published on 23 Oct 2018 - 22:10

score 573 · Answer 2 · 2018-10-24 15:01:22

573

Views

What is the relation between "derivations" and the "derived subalgebra" of a Lie algebra?

Published on 24 Oct 2018 - 15:01

score 346 · Answer 3 · 2026-03-24 23:46:25

346

Views

Analytic continuation of representations between $SO(4)$ and $O(1,3)$ Lie algebras

Published on 24 Mar 2026 - 23:46

score 111 · Answer 4 · 2018-10-25 06:58:46

111

Views

Statement(s) of PBW theorem

Published on 25 Oct 2018 - 6:58

score 183 · Answer 5 · 2026-03-25 10:56:01

183

Views

On the essential ideal of a Lie algebra

Published on 25 Mar 2026 - 10:56

score 229 · Answer 6 · 2018-10-28 00:27:28

229

Views

Decomposition of tensor product of irreducible representations of $\mathfrak{sl}(3, \mathbb{C})$

Published on 28 Oct 2018 - 0:27

score 96 · Answer 7 · 2026-03-25 20:35:28

96

Views

Is there any complex number $a$ solving $\exp (X)=1+aX$ for given square matrix $X$?

Published on 25 Mar 2026 - 20:35

score 26 · Answer 8 · 2018-10-29 16:34:43

26

Views

How to prove for each weight, $E^{adj}_\alpha$ is non-degenerate?

Published on 29 Oct 2018 - 16:34

score 101 · Answer 9 · 2026-03-25 07:49:08

101

Views

Why is $n_i \frac{\langle \alpha_i , \alpha_i \rangle}{\langle \alpha , \alpha \rangle}$ an integer?

Published on 25 Mar 2026 - 7:49

score 118 · Answer 10 · 2018-10-29 23:53:24

118

Views

Confused about coverings for Lie groups

Published on 29 Oct 2018 - 23:53

score 58 · Answer 11 · 2018-10-30 08:08:23

58

Views

If $[X, Y]=0$, then $\operatorname{Ad}_{e^{tX}}Y = Y$ for all $t\in \mathbb{R}$?

Published on 30 Oct 2018 - 8:08

score 3k · Answer 12 · 2026-03-25 02:24:36

3k

Views

How to tell the rank of a semisimple Lie algebra?

Published on 25 Mar 2026 - 2:24

score 695 · Answer 13 · 2018-10-30 23:29:03

695

Views

Proof of Lie's theorem, how to obtain a Lie group homomorphism from a Lie algebra homomorphism

Published on 30 Oct 2018 - 23:29

score 40 · Answer 14 · 2026-03-25 06:01:26

40

Views

Some preliminary concepts for Rota-Baxter algebras

Published on 25 Mar 2026 - 6:01

score 201 · Answer 15 · 2026-03-25 11:41:37

201

Views

If $H$ is a maximal toral subalgebra of $L$, then $H = H_1 \oplus ... \oplus H_t,$ where $H_i = L_i \cap H$.

Published on 25 Mar 2026 - 11:41

List Question

4th generator of U(2)

What is the relation between "derivations" and the "derived subalgebra" of a Lie algebra?

Analytic continuation of representations between $SO(4)$ and $O(1,3)$ Lie algebras

Statement(s) of PBW theorem

On the essential ideal of a Lie algebra

Decomposition of tensor product of irreducible representations of $\mathfrak{sl}(3, \mathbb{C})$

Is there any complex number $a$ solving $\exp (X)=1+aX$ for given square matrix $X$?

How to prove for each weight, $E^{adj}_\alpha$ is non-degenerate?

Why is $n_i \frac{\langle \alpha_i , \alpha_i \rangle}{\langle \alpha , \alpha \rangle}$ an integer?

Confused about coverings for Lie groups

If $[X, Y]=0$, then $\operatorname{Ad}_{e^{tX}}Y = Y$ for all $t\in \mathbb{R}$?

How to tell the rank of a semisimple Lie algebra?

Proof of Lie's theorem, how to obtain a Lie group homomorphism from a Lie algebra homomorphism

Some preliminary concepts for Rota-Baxter algebras

If $H$ is a maximal toral subalgebra of $L$, then $H = H_1 \oplus ... \oplus H_t,$ where $H_i = L_i \cap H$.

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