have list_in_ideal := listInIdeal l
α : Type u_1
inst✝ : Semiring α
l : List α
x : α
h : x ∈ l
⊢ x ∈ asIdeal l
α : Type u_1
inst✝ : Semiring α
l : List α
x : α
h : x ∈ l
list_in_ideal : ∀ (x : α), x ∈ l → x ∈ asIdeal l
⊢ x ∈ asIdeal l