Theorem PEquiv.symm_symm

Modification history

2024-08-17 20:08
Mathlib/Data/PEquiv.lean
chore(*): use `rfl` to prove `symm_symm` (#15923)
Modified PEquiv.symm_symmView on Github →
2022-12-14 13:31
Mathlib/Data/PEquiv.lean
feat port: Data.PEquiv (#1008) …
Added PEquiv.symm_symmView on Github →