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Whitehead Lemma

1 resource tagged “Whitehead Lemma” across the knowledge library.

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Guide6 Aug 2026Semisimple Lie Algebras and the Whitehead LemmasThe Killing form and Cartan's criterion, the Casimir element, the two Whitehead lemmas, and their consequences including Weyl's complete reducibility theorem and Levi's theorem.4 min readRead More