rfl
case a.a
C : _root_.Container
R S : Type u₁
f : R → Free C S
x : Free C S
this : ∀ (x y : Free C S), x = corec (bind.automaton f) (Sum.inr y) → eq x y
⊢ corec (bind.automaton f) (Sum.inr x) = corec (bind.automaton f) (Sum.inr x)
no goals