FormalConjectures/ErdosProblems/452.lean

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Explanation legend Lean4 Domain Explanation Language (L4DEL)

L4DEL explanations are a separate layer. They do not change the Lean source. Intuition is explanatory prose; numbered items are a reading path; sources link the wording back to evidence.

L4DEL
Lean4 Domain Explanation Language

Credit: The upstream authors and contributors retain credit for the project and mathematics. lean4-explainer only renders their pinned source and adds the separately disclosed explanation layer.

Project sources: Pinned project documentation, Formal Conjectures paper, arXiv v1

2 declarations, 1 contain sorry, 0 declared as axioms

Erdős Problem 452

Reference: erdosproblems.com/452

Imports (1)
  1. def Erdos452.largeOmegaIntervalLength The greatest length of an interval in $[x,2x]$ on which $\omega(n) > \log\log n$ everywhere line 34 source

    Source documentation

    The greatest length of an interval in $[x,2x]$ on which $\omega(n) > \log\log n$ everywhere.

    standard axioms: Classical.choice, Quot.sound, propext what this means

    Statement uses: Nat

    Proof uses: Nat.findGreatest, Exists, And, LE.le, HAdd.hAdd, HMul.hMul, OfNat.ofNat, Membership.mem, Finset, Finset.Ico, LT.lt, Real, Real.log, ArithmeticFunction, ArithmeticFunction.cardDistinctFactors, Classical.propDecidable

    17 instances, coercions and auxiliary constants left out.

    Tactic trace: 2 steps

    Open to load the checked before-and-after goal states.

    noncomputable def largeOmegaIntervalLength (x : ℕ) : ℕ := by
    …
  2. theorem Erdos452.erdos_452 Determine the largest length of an interval in $[x,2x]$ on which $\omega(n) > \log\log n$ everywhere sorry line 45 source

    Source documentation

    Determine the largest length of an interval in $[x,2x]$ on which $\omega(n) > \log\log n$ everywhere.

    depends on sorry what this means

    Statement uses: Eq, Nat, Erdos452.largeOmegaIntervalLength, sorryAx, Lean.Name, Bool.false, Lean.Name.num, Lean.Name.str, Lean.Name.anonymous, OfNat.ofNat

    2 instances, coercions and auxiliary constants left out.

    Tactic trace: 1 steps

    Open to load the checked before-and-after goal states.

    theorem erdos_452 : largeOmegaIntervalLength = answer(sorry) := by
    …

    Mentions: Erdos452.largeOmegaIntervalLength