exact h (neg_ne_zero.mpr hc) <| neg_pos.mpr <| hc.lt_of_le <| not_lt.mp hc_pos
case inr
z w : ℂ
c✝ : ℝ
p : ℂ
c : ℝ
hc : c ≠ 0
h : ∀ {c : ℝ}, c ≠ 0 → 0 < c → Square p c ∈ 𝓝 p
hc_pos : ¬0 < c
⊢ Square p (-c) ∈ 𝓝 p
no goals