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

TileStructure.Forest.adjoint_tree_control

Carleson.ForestOperator.AlmostOrthogonality · Carleson/ForestOperator/AlmostOrthogonality.lean:214 to 240

Source documentation

Lemma 7.4.3.

Exact Lean statement

lemma adjoint_tree_control
    (hu : u ∈ t) (hf : BoundedCompactSupport f) (h2f : f.support ⊆ G) :
    eLpNorm (adjointBoundaryOperator t u f ·) 2 volume ≤ C7_4_3 a * eLpNorm f 2 volume

Complete declaration

Lean source

Canonical source
Full Lean sourceLean 4
lemma adjoint_tree_control    (hu : u  t) (hf : BoundedCompactSupport f) (h2f : f.support  G) :    eLpNorm (adjointBoundaryOperator t u f ·) 2 volume  C7_4_3 a * eLpNorm f 2 volume := by  have m₁ : AEStronglyMeasurable (‖adjointCarlesonSum (t u) f ·‖ₑ) :=    hf.aestronglyMeasurable.adjointCarlesonSum.enorm.aestronglyMeasurable  have m₂ : AEStronglyMeasurable (maximalFunction volume 𝓑 c𝓑 r𝓑 1 f) :=    measurable_maximalFunction.aestronglyMeasurable  have m₃ : AEStronglyMeasurable (‖f ·‖ₑ) := hf.aestronglyMeasurable.enorm.aestronglyMeasurable  calc    _  eLpNorm (fun x  ‖adjointCarlesonSum (t u) f x‖ₑ + maximalFunction volume 𝓑 c𝓑 r𝓑 1 f x) 2 volume +        eLpNorm (‖f ·‖ₑ) 2 volume := eLpNorm_add_le (m₁.add m₂) m₃ one_le_two    _  eLpNorm (‖adjointCarlesonSum (t u) f ·‖ₑ) 2 volume +        eLpNorm (maximalFunction volume 𝓑 c𝓑 r𝓑 1 f ·) 2 volume + eLpNorm (‖f ·‖ₑ) 2 volume := by      gcongr; apply eLpNorm_add_le m₁ m₂ one_le_two    _  C7_3_1_1 a * dens₁ (t u) ^ (2 : )⁻¹ * eLpNorm f 2 volume +        CMB (defaultA a) 2 * eLpNorm f 2 volume + eLpNorm f 2 volume := by      gcongr      · exact adjoint_tree_estimate hf h2f hu      · exact (hasStrongType_maximalFunction_one one_lt_two) _ (hf.memLp _) |>.2      · rfl    _  (C7_3_1_1 a * 1 ^ (2 : )⁻¹ + CMB (defaultA a) 2 + 1) * eLpNorm f 2 volume := by      simp_rw [add_mul, one_mul]; gcongr; exact dens₁_le_one    _  _ := by      gcongr      simp only [ENNReal.one_rpow, mul_one, defaultA, Nat.cast_pow, Nat.cast_ofNat]      norm_cast      apply le_C7_4_3 (four_le_a X)