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关于Smarandache双阶乘函数与伪Smarandache函数的混合均值
引用本文:鲁伟阳,高丽,郝虹斐. 关于Smarandache双阶乘函数与伪Smarandache函数的混合均值[J]. 江西科学, 2014, 0(2): 189-191,251
作者姓名:鲁伟阳  高丽  郝虹斐
作者单位:延安大学数学与计算机科学学院,陕西延安716000
基金项目:陕西省教育厅自然科学基金项目(2013JQL019);延安大学自然科学专项科研基金项目(YDZ2013-04);延安大学研究生教育创新计划项目.
摘    要:对任意的正整数n,著名的Smarandache双阶乘函数Sdf(n)定义为最小的正整数m使得n|m!!,即Sdf(n)=min{m∶m∈N,n|m!!}。著名的伪Smarandache函数Z(n)定义为最小的正整数m使得nm(m+1)/2,即Z(n)=min{m∶m∈N,nm(m+1)/2}。利用初等方法和解析方法研究了复合函数Sdf(Z(n))的均值,并得到一个较强的渐近公式。

关 键 词:Smarandache双阶乘函数  伪Smarandache函数  复合函数  均值

On the Hybrid Mean Value of the Smarandache Double Factorial Function and the Pseudo-Smarandache Function
LU Wei-yang,GAO Li,HAO Hong-fei. On the Hybrid Mean Value of the Smarandache Double Factorial Function and the Pseudo-Smarandache Function[J]. Jiangxi Science, 2014, 0(2): 189-191,251
Authors:LU Wei-yang  GAO Li  HAO Hong-fei
Affiliation:( College of Mathematics and Computer Science, Yan'an University, Shaanxi Yan'an 716000 PRC)
Abstract:For any positive integer n, the famous Smarandache double factorial function Sdf(n) is de- fined as the smallest positive integer m such that n | m ! !. That is Sdf(n) = min { m : m ∈N, n | m ! ! t. And the Pseudo-Smarandache function Z (n) is defined as the smallest positive integer m such that n≤ m ( m + 1 )/2. That is, Z (n) = min { m : m ∈ N, n≤ m ( m + 1 )/2 }. The main purpose of this paper is to study the mean value properties of the composite function Sdf(Z(n) ) and give a sharper asymptotic formula by the elementary method and analytic method.
Keywords:Smarandache double factorial function   Pseudo-Smarandache function   Composite func-tion   Mean value
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