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Artin's conjecture on primitive roots: Part Ii Power Squarefree Part Modeq One

Artin's Conjecture on Primitive Roots*, second half, power version If a=bma = b^m is a perfect power of a number bb whose squarefree part b01(mod4)b_0\equiv 1 \pmod{4}, then the density of the set S(a)S(a) of primes pp such that aa is a primitive root modulo pp ...

Mathematical statement

Artin's Conjecture on Primitive Roots*, second half, power version If a=bma = b^m is a perfect power of a number bb whose squarefree part b01(mod4)b_0\equiv 1 \pmod{4}, then the density of the set S(a)S(a) of primes pp such that aa is a primitive root modulo pp is given by

\left(1 - \prod_{p \mid \gcd(b_0, m)} \frac{1}{2 - p} \prod_{p \mid b_0, p\nmid m} \frac{1}{(1 + p - p ^ 2)}\right),$$ where $C$ is Artin's constant.

Statement source: Wikipedia statement material

Statement terms: CC-BY-SA-4.0

Attributed source material. Reuse must follow the linked attribution and share-alike terms.

Statement artifacts, not proofs

These records expose exact Lean propositions and statement-only wrappers. Defining a proposition does not supply a proof of it. A placeholder-bearing target also contains no proof. Elaboration checks syntax and types; it does not certify that a formalization perfectly captures every nuance of the informal problem.

Pinned Lean formulation 1

artin_primitive_roots.variants.part_ii_power_squarefreePart_modeq_one

Canonical source
Complete statement target, proof intentionally absentLean 4
theorem artin_primitive_roots.variants.part_ii_power_squarefreePart_modeq_one    (a m b : ) (ha : a = b ^ m) (hb :  u v, 1 < u  b  v ^ u) (hm₁ : 1 < m)    (hm₂ : Odd m) (hb' : b.squarefreePart1 [MOD 4]) :    (S a).HasDensity      (ArtinConstant * powCorrectionFactor m * entanglementFactor b m)      {p | p.Prime} := by  sorry
Statement source
Formal Conjectures
Lean version
v4.27.0
Placeholder
Present; no proof artifact
Source evidence
Pinned source index
Fidelity review
Community formulation

References