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:2005
卷号:2005
期号:1
页码:133-141
DOI:10.1155/IJMMS.2005.133
出版社:Hindawi Publishing Corporation
摘要:
The various concepts of open balls in D -metric spaces are studied in the case of certain D -metric spaces and many results in the literature on such balls are shown to be false.