unfold DeltaSpike
𝕂 : Type u_1
inst✝ : _root_.RCLike 𝕂
Ψ : ℝ → ℝ
ε : ℝ
εpos : 0 < ε
suppΨ : Function.support Ψ ⊆ Icc (1 / 2) 2
⊢ (Function.support fun x => if x < 0 then 0 else DeltaSpike Ψ ε x) ⊆ Icc (2 ^ (-ε)) (2 ^ ε)
𝕂 : Type u_1
inst✝ : _root_.RCLike 𝕂
Ψ : ℝ → ℝ
ε : ℝ
εpos : 0 < ε
suppΨ : Function.support Ψ ⊆ Icc (1 / 2) 2
⊢ (Function.support fun x => if x < 0 then 0 else Ψ (x ^ (1 / ε)) / ε) ⊆ Icc (2 ^ (-ε)) (2 ^ ε)