FormalConjectures/Wikipedia/NormalityOfPi.lean

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1 declarations, 1 contain sorry, 0 declared as axioms

Normality of mathematical constants

Despite extensive empirical evidence—billions of digits have been computed for $\pi$, $e$, and $\sqrt{2}$, all showing near-uniform digit distribution—it is an open problem whether any of the classical constants $\pi$, $e$, $\sqrt{2}$, $\ln 2$, or $\varphi$ is normal in any base.

References:

Imports (1)
  1. theorem NormalNumber.pi_normal_base_ten $\pi$ is normal in base 10 sorry line 43 source

    Source documentation

    $\pi$ is normal in base 10.

    depends on sorry what this means

    Statement uses: NormalNumber.IsNormalInBase, OfNat.ofNat, Nat, Real.pi

    Proof uses: sorryAx, Lean.Name, Bool.false, Lean.Name.num, Lean.Name.str, Lean.Name.anonymous

    2 instances, coercions and auxiliary constants left out.

    Tactic trace: 1 steps

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

    theorem pi_normal_base_ten : IsNormalInBase 10 π := by
    …

    Mentions: NormalNumber.IsNormalInBase