proof ch:13-lie-algebra-expansions@proof-10

open in the book · parts/02-mathematical-methods/13-lie-algebra-expansions.tex:604

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proof : ch:13-lie-algebra-expansions@proof-10prooflemma 15.19: A grading is an involution, and the Killing form respects it15.19definition 15.18: ℤ_2-grading, symmetric coset15.18lemma 15.40: The three symmetric cosets are one ℤ_2×ℤ_2-grading15.40theorem 15.58: Nondegeneracy on a resonant subalgebra15.58

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proves A grading is an involution, and the Killing form respects it declared parts/02-mathematical-methods/13-lie-algebra-expansions.tex:604