2025-02-22T16:54:56-05:00 DEBUG: VuFindSearch\Backend\Solr\Connector: Query fl=%2A&wt=json&json.nl=arrarr&q=id%3A%22irk-123456789-154258%22&qt=morelikethis&rows=5
2025-02-22T16:54:56-05:00 DEBUG: VuFindSearch\Backend\Solr\Connector: => GET http://localhost:8983/solr/biblio/select?fl=%2A&wt=json&json.nl=arrarr&q=id%3A%22irk-123456789-154258%22&qt=morelikethis&rows=5
2025-02-22T16:54:56-05:00 DEBUG: VuFindSearch\Backend\Solr\Connector: <= 200 OK
2025-02-22T16:54:56-05:00 DEBUG: Deserialized SOLR response

Ultrafilters on G-spaces

For a discrete group G and a discrete G-space X, we identify the Stone-Cech compactifications βG and βX with the sets of all ultrafilters on G and X, and apply the natural action of βG on βX to characterize large, thick, thin, sparse and scattered subsets of X. We use G-invariant partitions and colo...

Full description

Saved in:
Bibliographic Details
Main Authors: Petrenko, O.V., Protasov, I.V.
Format: Article
Language:English
Published: Інститут прикладної математики і механіки НАН України 2015
Series:Algebra and Discrete Mathematics
Online Access:http://dspace.nbuv.gov.ua/handle/123456789/154258
Tags: Add Tag
No Tags, Be the first to tag this record!