case ofFinsupp
R : Type u
a b : R
m n : ℕ
inst✝ : Semiring R
q : R[X]
toFinsupp✝ : AddMonoidAlgebra R ℕ
⊢ support { toFinsupp := toFinsupp✝ } = ∅ ↔ { toFinsupp := toFinsupp✝ } = 0
R : Type u
a b : R
m n : ℕ
inst✝ : Semiring R
p q : R[X]
⊢ support p = ∅ ↔ p = 0
rcases p with ⟨⟩
no goals
case ofFinsupp
R : Type u
a b : R
m n : ℕ
inst✝ : Semiring R
q : R[X]
toFinsupp✝ : AddMonoidAlgebra R ℕ
⊢ support { toFinsupp := toFinsupp✝ } = ∅ ↔ { toFinsupp := toFinsupp✝ } = 0
simp [support]