Theorem HopfAlgebra.sum_mul_antipode_eq_algebraMap_counit

Modification history

2025-08-13 21:32
Mathlib/RingTheory/HopfAlgebra/Basic.lean
feat: `counit (antipode a) = counit a` (#25267) …
Added HopfAlgebra.sum_mul_antipode_eq_algebraMap_counitView on Github →