no goals
p : ℕ
inst✝ : Fact (Nat.Prime p)
F : Polynomial ℤ_[p]
a : ℤ_[p]
hnorm : ‖Polynomial.eval a F‖ < ‖Polynomial.eval a (↑Polynomial.derivative F)‖ ^ 2
hnsol : Polynomial.eval a F ≠ 0
h : ‖Polynomial.eval a (↑Polynomial.derivative F)‖ = 0
⊢ ‖Polynomial.eval a (↑Polynomial.derivative F)‖ ^ 2 = 0
simp [*, sq]