Finite Groups with p-Multiplicative Probabilistic Zeta Function

We prove that a finite group G is p-soluble if and only if the Dirichlet polynomial P _G (s) is p-multiplicative. Moreover, we show that one can recover the set of prime divisors of the order of G from the knowledge of P _G (s).     

Profinite Groups with Multiplicative Probabilistic Zeta Function

To a finitely generated profinite group G, a formal Dirichletseries P_G(s)=_na_n/n^s is associated, where a_n = _|G:H|=n µ_G(H).It is proved that G is prosoluble if and only if the sequence{a_n}_nN is multiplicative, that is, a_rs = a_ra_s for any pairof coprime positive integers r and s. This extends the analogousresult on the probabilistic zeta function of finite groups.     

Finiteness of Profinite Groups with a Rational Probabilistic Zeta Function

We prove that every profinite group in a certain class with a rational probabilistic zeta function has only finitely many maximal subgroups.     

Recognizing Soluble Groups from their Probabilistic Zeta Functions

It is proved that if P_G(s) has an Euler product expansion withall factors of the form where each q_i is a prime power, then G is soluble. 2000 MathematicsSubject Classification 20P05, 20F05, 11M41.     

Harmonic and Probabilistic Approaches to Zeros of Riemann's Zeta Function

Probability concepts and results are closely related to the study of zeros of the classical Riemann zeta function and its affinity to Gaussian and Gamma distributions. This is elaborated in obtaining the functional and integral equations for the zeta and in the determination first of the nonzero sets and then sets containing almost all (i.e., for the CLT probability measure) nontrivial zeros of the zeta function ζ(·). Also probability distributions determined by the zeta, based on the behavior of their finite dimensional distributions of the ζ(σ +it), σ > 0; as t varies and particularly the results of Denjoy, slightly sharpened, and also one of Salem are included. Several related opinions and comments are discussed.     

关于Nielson Zeta函数的有理性

Ａ．Ｌ．Ｆｅｌ＇ｓｈｔｙｎ和Ｖ．Ｂ．Ｐｉｌｙｕｇｉｎａ定义了Ｎｉｅｌｓｏｎｚｅｔａ函数并证明关于其有理性的一些结果，本文改进了他们的一些结果。     

On the Heyde Theorem for Finite Abelian Groups

It is well-known Heyde's characterization theorem for the Gaussian distribution on the real line: if _j are independent random variables, _j , _j are nonzero constants such that _i ± _j ^–1 _j 0 for all i j and the conditional distribution of L ₂=_{1 1} + ··· + _{n n} given L ₁=_{1 1} + ··· + _{n n} is symmetric, then all random variables _j are Gaussian. We prove some analogs of this theorem, assuming that independent random variables take on values in a finite Abelian group X and the coefficients _j , _j are automorphisms of X.     

On the Poles of Igusa's Local Zeta Function for Algebraic Sets

Let K be a p-adic field, let Z (s, f), sC, with Re(s) > 0,be the Igusa local zeta function associated to f(x) = (f₁(x),..., f_l(x)) [K (x₁, ..., x_n)]^l, and let be a Schwartz–Bruhatfunction. The aim of this paper is to describe explicitly thepoles of the meromorphic continuation of Z (s, f). Using resolutionof singularities it is possible to express Z (s, f) as a finitesum of p-adic monomial integrals. These monomial integrals arecomputed explicitly by using techniques of toroidal geometry.In this way, an explicit list of the candidates for poles ofZ (s, f) is obtained. 2000 Mathematics Subject Classification11S40, 14M25, 11D79.     

On Finite n-Acentralizer Groups

Let G be a group and Aut(G) be the group of automorphisms of G. Then the Acentralizer of an automorphism α ∈Aut(G) in G is defined as C _G (α) = {g ∈ G∣α(g) = g}. For a finite group G, let Acent(G) = {C _G (α)∣α ∈Aut(G)}. Then for any natural number n, we say that G is n-Acentralizer group if |Acent(G)| =n. We show that for any natural number n, there exists a finite n-Acentralizer group and determine the structure of finite n-Acentralizer groups for n ≤ 5.     

Probabilistic Generation of Wreath Products of Non-abelian Finite Simple Groups

Abstract

We show that the probability of generating an iterated standard wreath product of non-abelian finite simple groups is positive and tends to 1 as the order of the first simple group tends to infinity. This has the consequence that the profinite group which is the inverse limit of these iterated wreath products is positively finitely generated. Information depending on the Classification of Finite Simple Groups is used throughout.     

不充当自同构群的有限群

设ｐ为奇素数，本文将用一些新的技巧来证明，当Ｐ是阶小于Ｐ＾１１的交换Ｐ－群时，自同构群方程Ａｕｔ（Ｘ）＝Ｐ无解。这个结果使ＭａｃｈＨａｌｅ在１９８３年的工作得到了突破，并且我们所给的方法具有广泛性。     

黎曼ζ-函数之一:KS-变换——献给杨乐先生八十华诞

我们定义了KS-变换和自然数乘法结构相关的Fourier变换,建立了实数乘法半群[1,∞)={x:x∈R,x≥1}和复半平面Ω={s=σ+it:σ,t∈R,σ≥1/2}之间的由KS-变换诱导的对偶关系,证明了KS-变换是希尔伯特空间L~2([1,∞))和哈代空间H~2(Ω)之间的等距算子,而且该算子保持了相关的函数空间之间由实数的乘法卷积和复数点点相乘诱导出的代数结构的同构.作为应用,我们给出了黎曼假设成立的有关算子指标的等价命题,从而算子理论为研究黎曼ζ-函数和自然数的乘法结构提供了新思路.     

有限CN-群与有限c-可补群*

有限群G的子群H称为G的c-可补子群(c-正规子群),如果存在G的子群(正规子群)N, 使得 G = NH 且 N\cap H \leq H_G,这里 H_G =\bigcap\limits_g\in G H^g 是 H 在 G 中的核.每个子群都c-可补(c-正规)的有限群称为有限c-可补群(CN-群).本文研究有限CN-群与有限c-可补群, 获得了CN- 群与c-可补群的一些新的结果.特别地, 在方法上有一定的创新, 完善近期关于CN-群的研究.     

On Functional Relations for the Alternating Analogues of Tornheim's Double Zeta Function

In this paper, new proofs of two functional relations for the alternating analogues of Tornheim's double zeta function are given. Using the functional relations, the author gives new proofs of some evaluation formulas found by Tsumura for these alternating series.     

On Some Groups with Finite Involution Saturated with Finite Simple Groups

In the paper, on the basis of the notion of saturation introduced in [1], we give a characterization of locally finite simple groups with an Abelian Sylow 2-subgroup in the classes of mixed and periodic groups. A part of the main results was announced in [2]. Theorem 2 of the paper generalizes results of [3, 4].     

On Theorems of the Sylow Type for Finite Groups

We describe a new class of finite groups for which the D -theorem is true.