English
Applying an equivalence-preserving map to generators corresponds to mapping generators under the induced equivalence.
Русский
Применение отображения, сохраняющего эквивалентность, к генераторам соответствует отображению под индукцией эквивалентности.
LaTeX
$$equivPresentedGroup_apply_of (x : α) (rels : Set (FreeGroup α)) (e : α ≃ β) : equivPresentedGroup rels e (PresentedGroup.of x) = PresentedGroup.of (rels := FreeGroup.freeGroupCongr e '' rels) (e x)$$
Lean4
theorem equivPresentedGroup_apply_of (x : α) (rels : Set (FreeGroup α)) (e : α ≃ β) :
equivPresentedGroup rels e (PresentedGroup.of x) =
PresentedGroup.of (rels := FreeGroup.freeGroupCongr e '' rels) (e x) :=
rfl