`BookProof.ChapterWeylSl2.Sl2Rep.cas_comm_apply_H` (v : V) : R.cas (R.H v) = R.H (R.cas v)

Initializing...

`BookProof.ChapterWeylSl2.Sl2Rep.cas_comm_apply_H` (v : V) : R.cas (R.H v) = R.H (R.cas v) · Prove2Me