Between ${\cal A}$- and ${\cal B}$-sets
一般拓扑
2007-05-23 v1
摘要
The aim of this paper is to introduce the class of -sets as the sets that are the intersection of an open and a semi-regular set. Several classes of well-known topological spaces are characterized via the new concept. A new decomposition of continuity is provided.
引用
@article{arxiv.math/9811002,
title = {Between ${\cal A}$- and ${\cal B}$-sets},
author = {Julian Dontchev},
journal= {arXiv preprint arXiv:math/9811002},
year = {2007}
}
备注
to appear in "Mathematica Balkanica"