Discrete Mathematics & Theoretical Computer Science
| author: | Caspard, Nathalie and Monjardet, Bernard |
|---|---|
| title: | Some lattices of closure systems on a finite set |
| keywords: | Anti-exchange closure operator, closure system, convex geometry, (locally distributive) lattice, quasi-closed set. |
| abstract: | In this paper we study two lattices of significant particular closure systems on a finite set, namely the union stable
closure systems and the convex geometries. Using the notion of
(admissible) quasi-closed set and of (deletable) closed set, we
determine the covering relation ≺ of these lattices
and the changes induced, for instance, on the irreducible elements
when one goes from C to C' where
C and C' are two such closure systems
satisfying C ≺ C'. We also do a systematic study of
these lattices of closure systems, characterizing for instance their
join-irreducible and their meet-irreducible elements.
If your browser does not display the abstract correctly (because of the different mathematical symbols) you can look it up in the PostScript or PDF files. |
| reference: | Caspard, Nathalie and Monjardet, Bernard (2004), Some lattices of closure systems on a finite set, Discrete Mathematics and Theoretical Computer Science 6, pp. 163-190 |
| bibtex: | For a corresponding BibTeX entry, please consider our BibTeX-file. |
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| pdf-source: | dm060202.pdf (244 K) |
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