simp [algebraHom, algebraHomImpl]
Δ : RankedAlphabet
H : Type
target : Algebra Δ
f : { a // Vars Δ H a } → target.carrier
a✝ : target ∈ Set.univ
h✝ : H
hv : Vars Δ H (var h✝)
⊢ f { val := var h✝, property := hv } = Hom.hom (Term.algebraHom target f) { val := var h✝, property := hv }.val
no goals