simp
case empty
R : Type u_3
ι : Type u_1
inst✝¹ : CommSemiring R
inst✝ : DecidableEq ι
α : Type u_2
g : α → ι →₀ ℕ
f : α → R
this : DecidableEq α := Classical.decEq α
⊢ (∑ v ∈ ∅, (monomial (g v)) (f v)).support ⊆ image g ∅
no goals