English
Equivalences of LiftStruct for a square and the corresponding square in the opposite category.
Русский
Эквиваленции LiftStruct для квадрата и соответствующего квадрата в противоположной категории.
LaTeX
$$$opEquiv\ (sq) : LiftStruct\ sq \simeq LiftStruct\ sq.op$$$
Lean4
/-- Equivalences of `LiftStruct` for a square and the corresponding square
in the opposite category. -/
@[simps]
def opEquiv (sq : CommSq f i p g) : LiftStruct sq ≃ LiftStruct sq.op
where
toFun := op
invFun := unop
left_inv := by cat_disch
right_inv := by cat_disch