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fpvandoorn/carleson
Source indexedtheorem · leanprover/lean4:v4.32.0

linearized_metric_carleson

Carleson.MetricCarleson.Linearized · Carleson/MetricCarleson/Linearized.lean:109 to 128

Source documentation

Theorem 1.1.2

Exact Lean statement

theorem linearized_metric_carleson [IsCancellative X (defaultτ a)]
    (hq : q ∈ Ioc 1 2) (hqq' : q.HolderConjugate q') (mF : MeasurableSet F) (mG : MeasurableSet G)
    (mf : Measurable f) (nf : (‖f ·‖) ≤ F.indicator 1)
    (hT : ∀ θ : Θ X, HasBoundedStrongType (linearizedNontangentialOperator Q θ K · ·)
      2 2 volume volume (C_Ts a)) :
    ∫⁻ x in G, linearizedCarlesonOperator Q K f x ≤
    C1_0_2 a q * volume G ^ (q' : ℝ)⁻¹ * volume F ^ (q : ℝ)⁻¹

Complete declaration

Lean source

Canonical source
Full Lean sourceLean 4
theorem linearized_metric_carleson [IsCancellative X (defaultτ a)]    (hq : q  Ioc 1 2) (hqq' : q.HolderConjugate q') (mF : MeasurableSet F) (mG : MeasurableSet G)    (mf : Measurable f) (nf : (‖f ·‖)  F.indicator 1)    (hT :  θ : Θ X, HasBoundedStrongType (linearizedNontangentialOperator Q θ K · ·)      2 2 volume volume (C_Ts a)) :    ∫⁻ x in G, linearizedCarlesonOperator Q K f x     C1_0_2 a q * volume G ^ (q' : )⁻¹ * volume F ^ (q : )⁻¹ := by  have nf' : (‖f ·‖)  1 := nf.trans (indicator_le_self' (by simp))  calc    _ = ∫⁻ x, ⨆ n, G.indicator (lcoConvergent K Q f n) x := by      rw [ lintegral_indicator mG]; congr! 2 with x      rw [ iSup_apply, iSup_indicator rfl monotone_lcoConvergent monotone_const, iUnion_const,        iSup_lcoConvergent]    _ = ⨆ n, ∫⁻ x, G.indicator (lcoConvergent K Q f n) x :=      lintegral_iSup (fun _  (measurable_lcoConvergent mf nf').indicator mG)        (fun _ _ hl  indicator_mono (monotone_lcoConvergent hl))    _  _ := by      refine iSup_le fun n  ?_      unfold lcoConvergent; rw [lintegral_indicator mG]      exact R_truncation hq hqq' mF mG mf nf rfl hT