aesop
V : Type u
E : Type v
G : Graph V E
u✝ v✝ w✝ : V
e✝ : EdgeBetween G v✝ w✝
v w u : V
e : EdgeBetween G w u
p : EdgePath G v w
this : concat p e ++ nil u = p ++ cons e (nil u)
⊢ concat p e = p ++ cons e (nil u)
no goals