use b
case intro.intro
R : Type u_1
ι : Type u_2
inst✝ : CommSemiring R
p : MvPolynomial ι R
hp : p ≠ 0
b : ι →₀ ℕ
hb₁ : b ∈ p.support
hb₂ : (p.support.sup fun m => Multiset.card (Finsupp.toMultiset m)) = Multiset.card (Finsupp.toMultiset b)
⊢ ∃ v, (v.sum fun x e => e) = p.totalDegree ∧ coeff v p ≠ 0
case h
R : Type u_1
ι : Type u_2
inst✝ : CommSemiring R
p : MvPolynomial ι R
hp : p ≠ 0
b : ι →₀ ℕ
hb₁ : b ∈ p.support
hb₂ : (p.support.sup fun m => Multiset.card (Finsupp.toMultiset m)) = Multiset.card (Finsupp.toMultiset b)
⊢ (b.sum fun x e => e) = p.totalDegree ∧ coeff b p ≠ 0