`BookProof.ChapterA4g.rotGenZ_coeffMass1Z_comm` (i j : Fin 3) : rotGenZ i j * coeffMass1Z = coeffMass1Z * rotGenZ i j

Initializing...

`BookProof.ChapterA4g.rotGenZ_coeffMass1Z_comm` (i j : Fin 3) : rotGenZ i j * coeffMass1Z = coeffMass1Z * rotGenZ i j · Prove2Me