fpvandoorn/carleson
Source indexedlemma Β· leanprover/lean4:v4.32.0
TileStructure.Forest.volume_cpDsp_bound
Carleson.ForestOperator.LargeSeparation Β· Carleson/ForestOperator/LargeSeparation.lean:1181 to 1194
Mathematical statement
Exact Lean statement
lemma volume_cpDsp_bound {J : Grid X}
(hd : Β¬Disjoint (ball (π p) (8 * D ^ π° p)) (ball (c J) (16 * D ^ s J))) (hs : s J β€ π° p) :
volume (ball (c J) (32 * D ^ π° p)) / 2 ^ (4 * a) β€ volume (ball (π p) (4 * D ^ π° p))Complete declaration
Lean source
Full Lean sourceLean 4
lemma volume_cpDsp_bound {J : Grid X} (hd : Β¬Disjoint (ball (π p) (8 * D ^ π° p)) (ball (c J) (16 * D ^ s J))) (hs : s J β€ π° p) : volume (ball (c J) (32 * D ^ π° p)) / 2 ^ (4 * a) β€ volume (ball (π p) (4 * D ^ π° p)) := by apply ENNReal.div_le_of_le_mul' have h : dist (π p) (c J) + 32 * D ^ π° p β€ 16 * (4 * D ^ π° p) := by calc _ β€ 8 * (D : β) ^ π° p + 16 * D ^ s J + 32 * D ^ π° p := by gcongr; exact (dist_lt_of_not_disjoint_ball hd).le _ β€ 8 * (D : β) ^ π° p + 16 * D ^ π° p + 32 * D ^ π° p := by gcongr; exact one_le_realD a _ β€ _ := by rw [β add_mul, β add_mul, β mul_assoc]; gcongr; norm_num convert measure_ball_le_of_dist_le' (ΞΌ := volume) (by norm_num) h unfold As defaultA; norm_cast rw [β pow_mul', show (16 : β) = 2 ^ 4 by norm_num, Nat.clog_pow _ _ one_lt_two]