期刊名称:International Journal of Mathematics and Mathematical Sciences
印刷版ISSN:0161-1712
电子版ISSN:1687-0425
出版年度:2002
卷号:32
DOI:10.1155/S0161171202202306
出版社:Hindawi Publishing Corporation
摘要:We prove that if f(z) is a continuous real-valued function on
ℝ with the properties f(0)=f(1)=0 and that ‖f‖ z =infx,t|f(x