case ofFinsupp
R : Type u
a b : R
m n✝ : ℕ
inst✝ : Semiring R
p q : R[X]
n : ℕ
toFinsupp✝ : AddMonoidAlgebra R ℕ
⊢ support (erase n { toFinsupp := toFinsupp✝ }) = Finset.erase (support { toFinsupp := toFinsupp✝ }) n
R : Type u
a b : R
m n✝ : ℕ
inst✝ : Semiring R
p✝ q p : R[X]
n : ℕ
⊢ support (erase n p) = Finset.erase (support p) n
rcases p with ⟨⟩
no goals
case ofFinsupp
R : Type u
a b : R
m n✝ : ℕ
inst✝ : Semiring R
p q : R[X]
n : ℕ
toFinsupp✝ : AddMonoidAlgebra R ℕ
⊢ support (erase n { toFinsupp := toFinsupp✝ }) = Finset.erase (support { toFinsupp := toFinsupp✝ }) n
simp only [support, erase_def, Finsupp.support_erase]