OAI/NumberTheory/EgyptianFractions/CompositeBadDensity.lean

GitHub source file

5 declarations, 0 contain sorry, 0 declared as axioms

  1. def OAI.Problem337.CompositeSupply.badMultiples line 14

    Source documentation

    Integers containing a global bad conductor above the logarithmic cutoff. This finite set depends only on the ambient range, not on any chosen modulus.

    def badMultiples (Y : ℕ) : Finset ℕ := by
    …
  2. lemma OAI.Problem337.CompositeSupply.mem_badMultiples_iff line 19
  3. lemma OAI.Problem337.CompositeSupply.not_bad_of_not_mem_badMultiples line 28

    Source documentation

    Every conductor of a residual modulus avoids the global bad set if its original positive multiple avoids badMultiples.

    lemma not_bad_of_not_mem_badMultiples {Y n q d : ℕ}
        (hn : 1 ≤ n) (hnY : n ≤ Y) (hqn : q ∣ n)
        (hc : (base Y).Coprime q) (hne : n ∉ badMultiples Y)
        (hdq : d ∣ q) (hd : 2 ≤ d) : ¬ BadModulus d := by
    …

    Mentions: OAI.Problem337.CompositeSupply.base, OAI.Problem337.CompositeSupply.badMultiples, OAI.Problem337.CompositeSupply.BadModulus

  4. lemma OAI.Problem337.CompositeSupply.ambient_collisions_le_of_not_mem_badMultiples line 42

    Source documentation

    Quantitative conductor collisions for the global divisor pool, uniformly for every residual divisor of an integer outside the one exceptional set.

    lemma ambient_collisions_le_of_not_mem_badMultiples {Y n q d : ℕ} [NeZero d]
        (hn : 1 ≤ n) (hnY : n ≤ Y) (hqn : q ∣ n)
        (hc : (base Y).Coprime q) (hne : n ∉ badMultiples Y)
        (hdq : d ∣ q) (hd : 2 ≤ d) :
        ((collisionPairs (base Y).divisors (fun a => a % d)).card : ℝ) ≤
          ((base Y).divisors.card : ℝ)^2 / (d : ℝ)^(7 / 8 : ℝ) := by
    …

    Mentions: OAI.Problem337.CompositeSupply.base, OAI.Problem337.CompositeSupply.badMultiples, OAI.Problem337.collisionPairs

  5. theorem OAI.Problem337.CompositeSupply.eventually_badMultiples_card_le_of_shell_bound line 56

    Source documentation

    A sublinear shell count gives a vanishing exceptional-multiple density at the actual logarithmic conductor cutoff. The shell hypothesis is the only input; the cutoff and the product-energy transport are unconditional.

    theorem eventually_badMultiples_card_le_of_shell_bound
        {C β : ℝ} (hC : 0 ≤ C) (hβ : β < 1)
        (hcount : ∀ᶠ j : ℕ in atTop,
          (((Finset.Ico (2 ^ j) (2 ^ (j + 1))).filter BadModulus).card : ℝ) ≤
            C * ((2 : ℝ) ^ j) ^ β) :
        ∀ ε : ℝ, 0 < ε → ∀ᶠ Y : ℕ in atTop,
          ((badMultiples Y).card : ℝ) ≤ ε * Y := by
    …

    Mentions: OAI.Problem337.CompositeSupply.BadModulus, OAI.Problem337.CompositeSupply.badMultiples