Set: pp::colors Set: pp::unicode Theorem Congr1 {A : (Type U)} {B : A → (Type U)} {f g : Π x : A, B x} (a : A) (H : f == g) : f a == g a Theorem Congr2 {A : (Type U)} {B : A → (Type U)} {a b : A} (f : Π x : A, B x) (H : a == b) : f a == f b Theorem Congr {A : (Type U)} {B : A → (Type U)} {f g : Π x : A, B x} {a b : A} (H1 : f == g) (H2 : a == b) : f a == g b Error (line: 2, pos: 5) no object name in the environment matches the regular expression 'foo' Error (line: 3, pos: 5) invalid regular expression '(ab'