9 lines
178 B
Text
9 lines
178 B
Text
587.lean:13:2: proof state
|
|
A B : Type₁,
|
|
s : setoid A,
|
|
f : A → B,
|
|
c : ∀ a₁ a₂, a₁ ≈ a₂ → f a₁ = f a₂,
|
|
a : A,
|
|
g h : B → B,
|
|
gh : g = h
|
|
⊢ g (f a) = h (f a)
|