Re: Lie theory question

From: José Carlos Santos (jcsantos_at_fc.up.pt)
Date: 01/28/05


Date: Fri, 28 Jan 2005 14:00:06 +0000 (UTC)

On 26-01-2005 6:04, Chen Wei wrote:

> Let $G$ be a complex simple Lie group, $G=KP$ a Cartan decomposition,
> $A\subset P$ maximal abelian, $a\in A$, $p\in P$ such that $pap\in A$.
> Prove that $p\in A$.
> (And there I do mean $pap$, not $pap^{-1}$.) Many thanks in advance.

I am a bit confused here. What's a "Cartan decomposition" in the context
of *complex* Lie groups? I know the concept for semisimple real Lie
groups and I don't see how to adapt it to complex simple Lie groups.

Best regards,

Jose Carlos Santos



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