Proposition 2.0.2 #
theorem discrete_carleson (X : Type u_1) {a : β} {q : β} {K : X β X β β} {Οβ Οβ : X β β€} {F G : Set X} [MetricSpace X] [ProofData a q K Οβ Οβ F G] [TileStructure Q (defaultD a) (defaultΞΊ a) (defaultS X) (cancelPt X)] :
β (G' : Set X),
MeasurableSet G' β§ 2 * MeasureTheory.volume G' β€ MeasureTheory.volume G β§ β (f : X β β),
Measurable f β
(β (x : X), βf xβ β€ F.indicator 1 x) β
β«β» (x : X) in G \ G', βcarlesonSum Set.univ f xββ β€ β(C2_0_2 a (nnq X)) * MeasureTheory.volume G ^ (1 - qβ»ΒΉ) * MeasureTheory.volume F ^ qβ»ΒΉ