Title of article :
Spaces of remote points
Author/Authors :
Hern?ndez-Gutiérrez، نويسنده , , Rodrigo and Hru??k، نويسنده , , Michael and Tamariz-Mascar?a، نويسنده , , Angel، نويسنده ,
Issue Information :
دوماهنامه با شماره پیاپی سال 2012
Abstract :
Given a Tychonoff space X, let ϱ ( X ) be the set of remote points of X. We view ϱ ( X ) as a topological space. In this paper we assume that X is metrizable and ask for conditions on Y so that ϱ ( X ) is homeomorphic to ϱ ( Y ) . This question has been studied before by R.G. Woods and C. Gates. We give some results of the following type: if X has topological property P and ϱ ( X ) is homeomorphic to ϱ ( Y ) , then Y also has P. We also characterize the remote points of the rationals and irrationals up to some restrictions. Further, we show that ϱ ( X ) and ϱ ( Y ) have open dense homeomorphic subspaces if X and Y are both nowhere locally compact, completely metrizable and share the same cellular type, a cardinal invariant we define.
Keywords :
?ech–Stone compactification , Remote point , absolute , Metrizable space
Journal title :
Topology and its Applications
Journal title :
Topology and its Applications