English
The equivalence IsFreeGroup.lift is the canonical correspondence between generator functions and group homomorphisms.
Русский
Эквивелентность IsFreeGroup.lift задаёт каноническую соответствие между функциями-генераторами и гомоморфизмами группы.
LaTeX
$$lift : (Generators G → H) ≃ (G →* H)$$
Lean4
/-- The equivalence between functions on the generators and group homomorphisms from a free group
given by those generators. -/
def lift : (Generators G → H) ≃ (G →* H) :=
(basis G).lift