phi-variation in the sense of Wiener;
Uniformly continuous operator;
Regularization;
Composition operator;
Jensen equation;
D O I:
10.1016/j.na.2009.11.051
中图分类号:
O29 [应用数学];
学科分类号:
070104 ;
摘要:
We prove that, under some general assumptions, a generator of any uniformly continuous Nemytskii operator, mapping a subset of space of bounded variation functions in the sense of Wiener into another space of this type, must be an affine function. As a special case, we obtain an earlier result from Matkowski (in press) [4]. (C) 2009 Elsevier Ltd. All rights reserved.