ON A QUESTION OF J. M. RASSIAS

被引:1
|
作者
Fechner, Wlodzimierz [1 ]
机构
[1] Univ Silesia, Inst Math, PL-40007 Katowice, Poland
关键词
functional inequality; subadditive mappings; Dini derivatives; HOSSZU FUNCTIONAL INEQUALITY;
D O I
10.1017/S0004972713000889
中图分类号
O1 [数学];
学科分类号
0701 ; 070101 ;
摘要
Answering a problem posed by John Michael Rassias, we study the functional inequality f (x + y + xy) <= f (x) + f (y) + f (xy), with real unknown mapping f.
引用
收藏
页码:494 / 499
页数:6
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