exact DeltaSpikeSupport' εpos xnonneg suppΨ
𝕂 : Type u_1
inst✝ : _root_.RCLike 𝕂
Ψ : ℝ → ℝ
ε x : ℝ
εpos : 0 < ε
xnonneg : 0 ≤ x
suppΨ : Function.support Ψ ⊆ Icc (1 / 2) 2
⊢ DeltaSpike Ψ ε x ≠ 0 → x ∈ Icc (2 ^ (-ε)) (2 ^ ε)
no goals