English
Swapping the arguments in LiftRelO corresponds to swapping the underlying relations and the lifted relations.
Русский
Свопирование аргументов в LiftRelO эквивалентно обмену базовых отношений и поднятых отношений.
LaTeX
$$$$ \mathrm{swap}\bigl(\mathrm{LiftRelO}(R,C)\bigr) = \mathrm{LiftRelO}(\mathrm{swap}\,R,\mathrm{swap}\,C). $$$$
Lean4
theorem swap (R : α → β → Prop) (C) : swap (LiftRelO R C) = LiftRelO (swap R) (swap C) :=
by
funext x y
rcases x with ⟨⟩ | ⟨hx, jx⟩ <;> rcases y with ⟨⟩ | ⟨hy, jy⟩ <;> rfl