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Title: Ideals in Heyting semilattices and open homomorphisms
Authors: Picado, Jorge 
Pultr, Aleš 
Tozzi, Anna 
Keywords: Heyting semilattice; Ideal; subfitness; Open and complete ideals and homomorphisms
Issue Date: 2007
Publisher: Centro de Matemática da Universidade de Coimbra
Citation: Pré-Publicações DMUC. 07-05 (2007)
Abstract: Subfitness and its relation to openness and completeness is studied in the context of Heyting semilattices. A formally weaker condition (c-subfitness) is shown to be necessary and su±cient for openness and completeness to coincide. For a large class of spatial frames, c-subfit = subfit.
Rights: openAccess
Appears in Collections:FCTUC Matemática - Vários

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