no goals
α : Type u_1
m✝ n✝ m : ℕ
v : Vector3 α (succ m)
n : ℕ
w : Vector3 α n
a : α
_t : Vector3 α m
⊢ ((a :: _t) +-+ w) (left n fz) = (a :: _t) fz
simp [*, left]
no goals
α : Type u_1
m✝ n✝ m : ℕ
i : Fin2 m
v : Vector3 α (succ m)
n : ℕ
w : Vector3 α n
_a : α
t : Vector3 α m
⊢ ((_a :: t) +-+ w) (left n (fs i)) = (_a :: t) (fs i)
simp [append_left, left]