The set of idempotents in the weakly almost periodic compactification of the integers is not closed

Authors
Citation
B. Bordbar et J. Pym, The set of idempotents in the weakly almost periodic compactification of the integers is not closed, T AM MATH S, 352(2), 2000, pp. 823-842
Citations number
15
Categorie Soggetti
Mathematics
Journal title
TRANSACTIONS OF THE AMERICAN MATHEMATICAL SOCIETY
ISSN journal
00029947 → ACNP
Volume
352
Issue
2
Year of publication
2000
Pages
823 - 842
Database
ISI
SICI code
0002-9947(200002)352:2<823:TSOIIT>2.0.ZU;2-V
Abstract
This paper answers negatively the question of whether the sets of idempoten ts in the weakly almost periodic compactifications of (N, +) and (Z, +) are closed.