theorem 15.58 Nondegeneracy on a resonant subalgebra

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theorem 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 work15.59proof : ch:13-lie-algebra-expansions@proof-33proofdefinition 15.18: ℤ_2-grading, symmetric coset15.18definition 15.14: Truncated polynomial algebra and Takiff algebra15.14example 15.61: Maurer–Cartan expansion15.61proposition 15.26: The contraction along a grading15.26proposition 15.21: Resonance15.21theorem 15.34: The truncation tower is a tower of central extensions15.34lemma 15.40: The three symmetric cosets are one ℤ_2×ℤ_2-grading15.40proof : ch:13-lie-algebra-expansions@proof-10proofdefinition 15.3: Tensor product Lie algebra15.3corollary 15.70: Signature of the factorised form15.70example 15.57: k=2 recovers the Killing form15.57proposition 15.55: Completeness fails for k\ge315.55theorem A.64: Completeness of the factorised bilinear formsA.64theorem 15.53: The factorised forms are exactly the balanced ones15.53proof : ch:13-lie-algebra-expansions@proof-30prooftheorem 15.68: Positive Gram forms are positive sums of real characters15.68proof : ch:13-lie-algebra-expansions@proof-38proofcorollary 15.36: Bargmann in 3+1, extended Bargmann in 2+115.36

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typedirectionnode provenancewhere
depends_on Resonant subalgebra declared parts/02-mathematical-methods/13-lie-algebra-expansions.tex:2200
depends_on A grading is an involution, and the Killing form respects it declared parts/02-mathematical-methods/13-lie-algebra-expansions.tex:2200
depends_on Factorisation of invariant forms declared parts/02-mathematical-methods/13-lie-algebra-expansions.tex:2200
depends_on No positive pairing survives the radical declared parts/02-mathematical-methods/13-lie-algebra-expansions.tex:2579
depends_on The central charge is what makes the form work declared parts/02-mathematical-methods/13-lie-algebra-expansions.tex:2258
proves ch:13-lie-algebra-expansions@proof-33 declared parts/02-mathematical-methods/13-lie-algebra-expansions.tex:2203