一类带有对合的函数方程在群上的解

2018-12-12 06:25林霞赵侯宇
科技视界 2018年23期

林霞 赵侯宇

【摘 要】主要討论了一类函数方程解的情况,利用对合自同构在群上的性质,证明了该方程的解是一个加法函数。

【关键词】函数方程;对合自同构;加法函数

中图分类号:O171 文献标识码: A 文章编号: 2095-2457(2018)23-0209-002

DOI:10.19694/j.cnki.issn2095-2457.2018.23.093

【Abstract】We study the solutions of functional equation.By the properties of involutive automorphism on group,we prove the solutions can be expressed in additive function.

【Key words】Functional equation;Involutive automorphism;Additive function

最近,对带有对合的函数方程的研究成为函数方程领域一个热点,目前关于此方面的研究已取得了一系列成果[1-7]。1994 年,Simon 和Volkmann[8]考虑了

注由上述定理易知函数方程(2)的解f在群G上满足f(xn)=nf(x). 因此引理1的结论(iv)是n=2的情况。

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