(y : H) (T₀ : ℝ) : IsCompact ((fun s : ℝ => T.stoneU s y) '' Set.Icc (-T₀) T₀)

-- Generated from ChapterSirkTrotterKato.lean — theorem BookProof.ChapterSirkTrotterKato.isCompact_orbit
import Mathlib
import Definitions.Def_ChapterSirkTrotterKato
open BookProof.ChapterSirkTrotterKato










noncomputable section

open Filter Topology Asymptotics
open scoped InnerProductSpace


open BookProof.ChapterStoneResolvent

variable {H : Type*} [NormedAddCommGroup H] [InnerProductSpace ℂ H] [CompleteSpace H]













variable (T : UnboundedSelfAdjoint H) (S : ℕ → UnboundedSelfAdjoint H)

theorem BookProof.ChapterSirkTrotterKato.isCompact_orbit (y : H) (T₀ : ℝ) :
    IsCompact ((fun s : ℝ => T.stoneU s y) '' Set.Icc (-T₀) T₀) := by sorry