Please use this identifier to cite or link to this item: https://hdl.handle.net/10316/11276
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dc.contributor.authorGutiérrez García, Javier-
dc.contributor.authorKubiak, Tomasz-
dc.contributor.authorPicado, Jorge-
dc.date.accessioned2009-09-01T13:10:49Z-
dc.date.available2009-09-01T13:10:49Z-
dc.date.issued2007-
dc.identifier.citationPré-Publicações DMUC. 07-41 (2007)en_US
dc.identifier.urihttps://hdl.handle.net/10316/11276-
dc.description.abstractIn this paper we prove two strict insertion theorems for frame homomorphisms. When applied to the frame of all open subsets of a topological space they are equivalent to the insertion statements of the classical theorems of Dowker and Michael regarding, respectively, normal countably paracompact spaces and perfectly normal spaces. In addition, a study of perfect normality for frames is made.en_US
dc.description.sponsorshipMinistry of Education and Science of Spain and FEDER under grant MTM2006-14925-C02-02. The third named author acknowledges financial support from the Centre of Mathematics of the University of Coimbra/FCT.en_US
dc.language.isoengen_US
dc.publisherCentro de Matemática da Universidade de Coimbraen_US
dc.rightsopenAccesseng
dc.subjectFrameen_US
dc.subjectSublocaleen_US
dc.subjectInsertion theoremen_US
dc.subjectExtension theoremen_US
dc.subjectKat¡etov relationen_US
dc.subjectContinuous real function on a frameen_US
dc.subjectLower semicontinuousen_US
dc.subjectUpper semicontinuousen_US
dc.subjectNormal frameen_US
dc.subjectPerfectly normal frameen_US
dc.subjectCountably paracompact frameen_US
dc.titlePointfree forms of Dowker and Michael insertion theoremsen_US
dc.typepreprinten_US
uc.controloAutoridadeSim-
item.openairecristypehttp://purl.org/coar/resource_type/c_816b-
item.openairetypepreprint-
item.cerifentitytypePublications-
item.grantfulltextopen-
item.fulltextCom Texto completo-
item.languageiso639-1en-
crisitem.author.deptFaculty of Sciences and Technology-
crisitem.author.parentdeptUniversity of Coimbra-
crisitem.author.researchunitCMUC - Centre for Mathematics of the University of Coimbra-
crisitem.author.orcid0000-0001-7837-1221-
Appears in Collections:FCTUC Matemática - Vários
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