fpvandoorn/carleson
Source indexedlemma · leanprover/lean4:v4.32.0
MeasureTheory.eLpNorm_truncCompl_anti
Carleson.ToMathlib.RealInterpolation.Misc · Carleson/ToMathlib/RealInterpolation/Misc.lean:610 to 620
Mathematical statement
Exact Lean statement
lemma eLpNorm_truncCompl_anti (hf : eLpNorm f 1 μ ≠ ⊤) (mf : AEStronglyMeasurable f μ) :
Antitone (fun s ↦ eLpNorm (truncCompl f s) p μ)Complete declaration
Lean source
Full Lean sourceLean 4
lemma eLpNorm_truncCompl_anti (hf : eLpNorm f 1 μ ≠ ⊤) (mf : AEStronglyMeasurable f μ) : Antitone (fun s ↦ eLpNorm (truncCompl f s) p μ) := by intro a _b hab have : ∀ᵐ x ∂μ, ‖f x‖ₑ ≠ ⊤ := by rw [eLpNorm_one_eq_lintegral_enorm] at hf simp_rw [ae_iff, not_ne_iff]; exact measure_eq_top_of_lintegral_ne_top mf.enorm hf have : ∀ᵐ x ∂μ, ‖trunc f a x‖ₑ ≠ ⊤ := by refine this.mono fun x hx ↦ ?_ rw [trunc] split_ifs; exacts [hx, by simp] exact eLpNorm_mono_enorm_ae <| this.mono fun x hx ↦ truncCompl_anti hab hx