Covariant and contravariant approaches to topology.
Dydak, Jerzy (1997)
International Journal of Mathematics and Mathematical Sciences
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Displaying similar documents to “C- and C*-quotients in pointfree topology”
Covariant and contravariant approaches to topology.
Archimedean frames, revisited
Jorge Martinez (2008)
Commentationes Mathematicae Universitatis Carolinae
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This paper extends the notion of an archimedean frame to frames which are not necessarily algebraic. The new notion is called and is . Assuming the Axiom of Choice and for compact normal algebraic frames, the new and the old coincide. There is a subfunctor from the category of compact normal frames with skeletal maps with joinfit values, which is almost a coreflection. Conditions making it so are briefly discussed. The concept of an element arises naturally, and the join of suitably...
-separation axioms on frames
Jan Paseka (1987)
Acta Universitatis Carolinae. Mathematica et Physica
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On Urysohn's lemma
Dowker, C. H.
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