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arXiv math/9912250math.NT
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二元Artin猜想

A two variable Artin conjecture

Pieter Moree, Peter Stevenhagen

摘要:

设a和b是乘法独立的非零有理数。研究了由(a \mod p)生成的p元有限域的乘法群的子群包含(b \mod p)的素数集p的自然密度.证明了在广义黎曼假设(GRH)下,该密度存在且等于普适常数S= \prod_{p prime}(1-p/(p^3-1))的正有理数倍.在较弱的条件下给出了密度的一个显式值。这扩展并纠正了P. J. Stephens(1976)的早期工作。我们的结果与第二作者的早期工作相结合,使我们能够推出任何二阶线性递归可约特征多项式的整数元素,有一个正的素除子密度(下GRH)。

英文摘要:

Let a and b be non-zero rational numbers that are multiplicatively independent. We study the natural density of the set of primes p for which the subgroup of the multiplicative group of the finite field with p elements generated by (a\mod p) contains (b\mod p). It is shown that, under assumption of the generalized Riemann hypothesis (GRH), this density exists and equals a positive rational multiple of the universal constant S=\prod_{p prime}(1-p/(p^3-1)). An explicit value of the density is given under mild conditions on a and b. This extends and corrects earlier work of P.J. Stephens (1976). Our result, in combination with earlier work of the second author, allows us to deduce that any second order linear recurrence with reducible characteristic polynomial having integer elements, has a positive density of prime divisors (under GRH).

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