English
There is a canonical projection simplifying the action of a bialgebra equivalence to its underlying function.
Русский
Существует каноническое проецирование, упрощающее действие биалгебрового эквивалентности до его базовой функции.
LaTeX
$$$\\text{apply}\\colon \\text{BialgEquiv.simps} \\to (A\\to B)$$$
Lean4
/-- See Note [custom simps projection] -/
def apply {R : Type u} [CommSemiring R] {α : Type v} {β : Type w} [Semiring α] [Semiring β] [Algebra R α] [Algebra R β]
[CoalgebraStruct R α] [CoalgebraStruct R β] (f : α ≃ₐc[R] β) : α → β :=
f