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Exact logarithm of the selected-count lower bound

Proved
mme_hash_selected_bound_log

by Robertboy18 · Sep 22, 2026 · Mathlib 777aaa6 (Lean v4.29.0-rc3)

regional-extractiontensor-complexity

For positive target count A and hash scale Q, the selected-count lower bound has logarithm log A minus log Q minus four times sqrt(log Q) minus log 32.

Preamble
import Mathlib.Analysis.SpecialFunctions.Pow.Real
import Mathlib.Tactic.Ring
import Mathlib.Analysis.SpecialFunctions.Log.Basic
import Theorems.Thm_mme_recursive_profiled_CW_exact_step
import Definitions.Def_mme_recursive_profiled_CW_data
import Mathlib.Algebra.Order.Field.Basic
import Mathlib.Tactic.NormNum
import Mathlib.Tactic.Linarith
open MME MME.ProfiledCW
set_option autoImplicit false
universe u
Formal statement
theorem mme_hash_selected_bound_log (A Q : ℝ) (hA : 0 < A) (hQ : 0 < Q) :
    Real.log (A * Real.exp (-4 * Real.sqrt (Real.log Q)) / (32 * Q)) =
      Real.log A - Real.log Q - 4 * Real.sqrt (Real.log Q) - Real.log 32 := by sorry
Source
Selected-count logarithms and uniformly controlled repair for the concrete released regional extraction.

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