2025-02-22T10:25:49-05:00 DEBUG: VuFindSearch\Backend\Solr\Connector: Query fl=%2A&wt=json&json.nl=arrarr&q=id%3A%22irk-123456789-165924%22&qt=morelikethis&rows=5
2025-02-22T10:25:49-05:00 DEBUG: VuFindSearch\Backend\Solr\Connector: => GET http://localhost:8983/solr/biblio/select?fl=%2A&wt=json&json.nl=arrarr&q=id%3A%22irk-123456789-165924%22&qt=morelikethis&rows=5
2025-02-22T10:25:49-05:00 DEBUG: VuFindSearch\Backend\Solr\Connector: <= 200 OK
2025-02-22T10:25:49-05:00 DEBUG: Deserialized SOLR response
Ultrafilters on balleans

Ultrafilters on balleans

A ballean (equivalently, a coarse structure) is an asymptotic counterpart of a uniform space. We introduce three ultrafilter satellites of a ballean (namely, corona, companion, and corona companion), evaluate the basic cardinal invariants of the corona and characterize the subsets of balleans in ter...

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Bibliographic Details
Main Authors: Protasov, I.V., Slobodianiuk, S.V.
Format: Article
Language:English
Published: Інститут математики НАН України 2015
Series:Український математичний журнал
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Online Access:http://dspace.nbuv.gov.ua/handle/123456789/165924
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http://dspace.nbuv.gov.ua/handle/123456789/165924

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