Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
4659483 | Topology and its Applications | 2011 | 9 Pages |
Abstract
We continue investigating the lattice (q(X),⊆) of quasi-uniformities on a set X. In particular in this article we start investigating permutable pairs of quasi-uniformities. Among other things, we show that the Pervin quasi-uniformity of a topological space X permutes with its conjugate if and only if X is normal and extremally disconnected.
Related Topics
Physical Sciences and Engineering
Mathematics
Geometry and Topology