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  • 0 posts edited
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  • 21 votes cast
Feb
19
awarded  Tumbleweed
Feb
12
accepted Why does the Gauss-Bonnet theorem apply only to even number of dimensons?
Feb
12
asked Square wave in the limit of infinite frequency
Feb
21
awarded  Scholar
Feb
21
accepted How can the Cartan-Weyl basis of su(2) be a basis if it does not consist of antihermitian operators?
Feb
21
comment How can the Cartan-Weyl basis of su(2) be a basis if it does not consist of antihermitian operators?
Thanks, Eric and Jyrki. I guess the most important thing to remember is that "... the root vectors Lie in the complexified algebra. This always happens for semi-simple Lie algebras.".
Feb
21
awarded  Editor
Feb
21
revised How can the Cartan-Weyl basis of su(2) be a basis if it does not consist of antihermitian operators?
fix an inconsequential error
Feb
21
comment How can the Cartan-Weyl basis of su(2) be a basis if it does not consist of antihermitian operators?
@JyrkiLahtonen, could you elaborate what you meant by the ladder ops existing only in the complexification of su(2). Concerning the number of dimensions, you are completely right, I was thinking of su(3), I will correct it.
Feb
21
comment How can the Cartan-Weyl basis of su(2) be a basis if it does not consist of antihermitian operators?
I am not a mathematician, so please be patient when explaining/correcting any misconceptions that I might have.
Feb
21
asked How can the Cartan-Weyl basis of su(2) be a basis if it does not consist of antihermitian operators?
Jun
26
awarded  Student
Jun
26
asked Why does the Gauss-Bonnet theorem apply only to even number of dimensons?
Jun
26
comment How do I show this property of a square matrix is true?
Saying the same thing shorter: linear independence of columns is equivalent to determinant different than zero is equivalent to linear independence of rows.
Jun
26
awarded  Supporter