Value-distribution of zeta-functions
Value-distribution of zeta-functions
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zeta 函数的值分布
DOI:
10.1007/bfb0097134
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发表时间:
1990
期刊:
影响因子:
--
通讯作者:
Kohji Matsumoto
中科院分区:
文献类型:
--
作者:
Kohji Matsumoto
The purpose of this article is to give the hitherto simplest proof of the existence of the asymptotic probability measure connected with the value-distribution of zeta-functions. The existence theorem of the asymptotic measure was first obtained by Bohr-Jessen [2] in the case of the Riemann zeta-function, whose proof is based on a complicated theory on the sums of convex curves. Jessen-Wintner [6] and Borchsenius-Jessen [3] have shown an alternative proof, using P. Levy's convergence theorem in probability theory. Some properties of convex curves are used in their proof, so their method, as it is, can be applied only to the case of" convex" Euler products.(The rigorous meaning of this term we will explain in the last section.) However, we can modify their probabilistic approach to construct a proof which can be applied to non-convex Euler products. Such a proof was first obtained in [9] for zeta-functions defined by Heeke operators. The proof in the present paper is a simplified version of the one in [9], but we will work in a more general situation.