Cardinal invariants for C-cross topologies
一般拓扑
2007-05-23 v1
摘要
C-cross topologies are introduced. Modifcations of the Kuratowski-Ulam Theorem are considered. Cardinal invariants add, cof, cov and non with respect to meager or nowhere dense subsets are compared. Remarks on invariants cof(nwdY) are mentioned for dense subspaces Y of X.
引用
@article{arxiv.math/0609351,
title = {Cardinal invariants for C-cross topologies},
author = {Andrzej Kucharski and Szymon Plewik},
journal= {arXiv preprint arXiv:math/0609351},
year = {2007}
}
备注
11 pages