The spectrum of characters of ultrafilters on omega

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dc.creatorShelah, Saharon
dc.date2006-12-09
dc.date2007-08-15
dc.date.accessioned2026-07-07T08:23:40Z
dc.date.available2026-07-07T08:23:40Z
dc.descriptionWe show the consistency of the set of regular cardinals which are the character of some ultrafilter on omega is not convex. We also deal with the set of pi chi-characters of ultrafilters on omega.
dc.identifierhttps://arxiv.org/abs/math/0612240
dc.identifierhttp://arxiv.org/abs/math/0612240
dc.identifierColloq. Math. 111 No. 2 (2008) 213--220
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/136082
dc.subjectLogic
dc.subjectGeneral Topology
dc.titleThe spectrum of characters of ultrafilters on omega
dc.typetext

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