Compositions with the Euler and Carmichael functions

被引：0
|
作者：
Banks, WD [1 ]
Luca, F
Saidak, F
Stanica, P
机构：
[1] Univ Missouri, Dept Math, Columbia, MO 65211 USA
[2] Univ Nacl Autonoma Mexico, Inst Matemat, Morelia 58089, Michoacan, Mexico
[3] Wake Forest Univ, Dept Math, Winston Salem, NC 27109 USA
[4] Auburn Univ, Dept Math, Montgomery, AL 36124 USA
来源：
ABHANDLUNGEN AUS DEM MATHEMATISCHEN SEMINAR DER UNIVERSITAT HAMBURG | 2005年 / 75卷 / 1期
基金：
美国国家科学基金会;
关键词：
D O I：
10.1007/BF02942044
中图分类号：
O1 [数学];
学科分类号：
0701 ; 070101 ;
摘要：
Let phi and lambda be the Enter and Carmichael functions, respectively. In this paper, we establish lower and upper bounds for the number of positive integers n <= x such that phi(lambda(n)) = lambda(phi(n)). We also study the normal order of the wfunction phi(lambda(n))/lambda(phi(n)).
引用
收藏
页码：215 / 244
页数：30
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