`BookProof.ChapterG.BRST_nilpotent` (Q : A) : BRST Q * BRST Q = (0 : Matrix (Fin 2) (Fin 2) A)

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`BookProof.ChapterG.BRST_nilpotent` (Q : A) : BRST Q * BRST Q = (0 : Matrix (Fin 2) (Fin 2) A) · Prove2Me