`BookProof.ChapterWignerLittleGroup.act_det` (A X : Matrix (Fin 2) (Fin 2) ℂ) : (act A X).det = A.det * X.det * (starRingEnd ℂ) A.det

Initializing...

`BookProof.ChapterWignerLittleGroup.act_det` (A X : Matrix (Fin 2) (Fin 2) ℂ) : (act A X).det = A.det * X.det * (starRingEnd ℂ) A.det · Prove2Me