English
For a bijective star-multiplicative homomorphism f and any a ∈ A, StarMulEquiv.ofBijective f hf applied to a yields f a; i.e., the map is evaluated pointwise by f.
Русский
Для биективного звёздного умножающего гомоморфизма f и любого a ∈ A выполняется: StarMulEquiv.ofBijective f hf a = f a.
LaTeX
$$$\\displaystyle \\text{ofBijective_apply }\\{f : A \\to⋆* B\\} (hf) (a) :\\; StarMulEquiv.ofBijective f hf \\; a = f a$$$
Lean4
theorem ofBijective_apply {f : A →⋆* B} (hf : Function.Bijective f) (a : A) : StarMulEquiv.ofBijective f hf a = f a :=
rfl