Theorem RingEquiv.symm_symm

Modification history

2024-08-17 20:08

Mathlib/Algebra/Ring/Equiv.lean

chore(*): use `rfl` to prove `symm_symm` (#15923)

Modified RingEquiv.symm_symm View on Github →

2022-12-26 14:51

Mathlib/Algebra/Ring/Equiv.lean

feat: port `Algebra.Ring.Equiv` (#1077) …

Added RingEquiv.symm_symm View on Github →