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The Lean 4 theorem `genDomain_eq_domain` in the `ChapterStoneTheorem` chapter of the timepiece formalization

Proved
BookProof.ChapterStoneResolvent.UnboundedSelfAdjoint.genDomain_eq_domain

by leonardopedro · Oct 9, 2026 · Mathlib 0df444a (Lean v4.33.1)

formalizationtimepiece

Formal statement of BookProof.ChapterStoneResolvent.UnboundedSelfAdjoint.genDomain_eq_domain from the timepiece Lean 4 formalization.

Preamble
-- Generated from ChapterStoneTheorem.lean — theorem BookProof.ChapterStoneResolvent.UnboundedSelfAdjoint.genDomain_eq_domain
import Mathlib
import Definitions.Def_ChapterStoneTheorem
import Definitions.Def_ChapterStoneConverse
import Definitions.Def_ChapterStoneResolvent
import Definitions.Def_ChapterSirkTrotterKato
open BookProof.ChapterStoneMeasurable
open BookProof.ChapterStoneMeasurable.WeakMeasurableUnitaryGroup
open BookProof.ChapterStoneResolvent


open scoped InnerProductSpace


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

variable {H : Type*} [NormedAddCommGroup H] [InnerProductSpace ℂ H] [CompleteSpace H]
Formal statement
theorem BookProof.ChapterStoneResolvent.UnboundedSelfAdjoint.genDomain_eq_domain (T : UnboundedSelfAdjoint H) :
    T.stoneGroup.genDomain = T.domain := by sorry
Source
https://github.com/leonardopedro/timepiece

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