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Kosm
  • Member for 8 years, 11 months
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2 votes
1 answer
447 views

How to calculate total number of roots in an A-type root system?

2 votes
1 answer
487 views

Euler and Betti numbers' relation

1 vote
0 answers
161 views

Gamma matrix identities and normalization

1 vote
1 answer
407 views

Second derivative of Kähler potential.

1 vote
1 answer
31 views

The group $O(n,n,\mathbb{Z})$ and its properties.

1 vote
0 answers
151 views

Decomposition of the fundamental representation of $SU(2)\times SU(2)$

1 vote
0 answers
380 views

What exactly is lower central series of Lie algebra?

1 vote
1 answer
330 views

"Semi-simplicity" of Lie algebra elements.

0 votes
1 answer
959 views

Number of Cartan subalgebra elements

0 votes
2 answers
76 views

Adjoint action notations $\operatorname{ad}(X)(Y)$, $\operatorname{ad}(X)$ and $\operatorname{ad}_x(Y)$ are equivalent??

0 votes
1 answer
1k views

Example of homology group of a simplicial complex.

0 votes
1 answer
218 views

Trace of a power of a skew-symmetric matrix