Title of article
is not closed
Author/Authors
Zelenyuk، نويسنده , , Yevhen Zelenyuk، نويسنده ,
Issue Information
دوماهنامه با شماره پیاپی سال 2011
Pages
3
From page
1721
To page
1723
Abstract
Let S be an infinite discrete semigroup which can be embedded algebraically into a group and let βS be the Stone–Čech compactification of S. We show that if | S | is not Ulam-measurable, then the smallest ideal of βS is not closed.
Keywords
Stone–?ech compactification , Ultrafilter semigroup , Smallest ideal , Idempotent , Extremally disconnected space
Journal title
Topology and its Applications
Serial Year
2011
Journal title
Topology and its Applications
Record number
1582971
Link To Document