proof ch:13-lie-algebra-expansions@proof-33

open in the book · parts/02-mathematical-methods/13-lie-algebra-expansions.tex:2203

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proof : ch:13-lie-algebra-expansions@proof-33prooftheorem 15.58: Nondegeneracy on a resonant subalgebra15.58definition 15.20: Resonant subalgebra15.20lemma 15.19: A grading is an involution, and the Killing form respects it15.19theorem 15.51: Factorisation of invariant forms15.51corollary 15.69: No positive pairing survives the radical15.69remark 15.59: The central charge is what makes the form work15.59

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proves Nondegeneracy on a resonant subalgebra declared parts/02-mathematical-methods/13-lie-algebra-expansions.tex:2203