apply antitoneOn_of_hasDerivWithinAt_nonpos (convex_Ioi _) (hh_continuous _) l1 (fun x _ => hh'_nonpos ha)
n : ℕ
A a✝ b c d u x y t σ' : ℝ
ψ Ψ : ℝ → ℂ
F G : ℂ → ℂ
f : ℕ → ℂ
𝕜 : Type
inst✝ : _root_.RCLike 𝕜
a : ℝ
ha : a ∈ Ioo (-1) 1
l1 : ∀ x ∈ interior (Ioi 0), HasDerivWithinAt (hh a) (hh' a x) (interior (Ioi 0)) x
⊢ AntitoneOn (hh a) (Ioi 0)
no goals