`BookProof.ChapterA3w.lemma52_parity_gluing` : (projChirL * mgamma 0 ≠ mgamma 0 * projChirL) ∧ (projChirL * mgamma 0 = mgamma 0 * projChirR) ∧ (parityDiag * projLL ≠ projLL * parit

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`BookProof.ChapterA3w.lemma52_parity_gluing` : (projChirL * mgamma 0 ≠ mgamma 0 * projChirL) ∧ (projChirL * mgamma 0 = mgamma 0 * projChirR) ∧ (parityDiag * projLL ≠ projLL * parit · Prove2Me