The weak p-adic digit distribution conjecture for algebraic irrational numbers

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Let α∈Q‾∖Q\alpha\in\overline{\mathbf{Q}}\setminus\mathbf{Q}, and let SS be the set of rational primes that are totally split in Q(α)\mathbf{Q}(\alpha). Let rr and ss be integers, and let u,vu,v be real numbers with 0≤u<v≤10\leq u<v\leq 1. For p∈Sp\in S and a field embedding σ ⁣:Q(α)→Qp\sigma\colon\mathbf{Q}(\alpha)\to\mathbf{Q}_p, write αn(p,σ)\alpha_n(p,\sigma) for the nnth pp-adic digit of α\alpha. Weak p-adic digit distribution conjecture. For all but finitely many primes p∈Sp\in S, with the finite exceptional set depending on α\alpha, rr, ss, uu, and vv, the digit αn(p,σ)\alpha_n(p,\sigma) lies in the interval (u(p−1),v(p−1))(u(p-1),v(p-1)) for infinitely many integers n≥0n\geq 0 in the arithmetic progression n=rm+sn=rm+s. This is presented as a weakened form of normality for algebraic pp-adic numbers; the corresponding normality question for algebraic numbers of degree at least two is described as open, and no resolution of this weaker conjecture is given.

References

Primary source

Cameron Franc, Nathan Heisz and Hannah Nardone, “Density formulas for p-adically bounded primes for hypergeometric series with rational and quadratic irrational parameters”, arXiv:2412.02523 (2024).

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