Some contributions to the minimum representation problem of key systems

TitleSome contributions to the minimum representation problem of key systems
Publication TypeConference Paper
AuthorsKatona, G. O. H., and K. Tichler
Year2006
Pages240 - 257
Conference NameLecture Notes in Computer Science
Languageeng
ISBN Number0302-97433540317821
Notes

exported from refbase (http://www.bibliography.ceu.hu/show.php?record=6266), last updated on Mon, 02 Nov 2009 12:19:04 +0100

Abstract

Some new and improved results on the minimum representation problem for key systems will be presented. By improving a lemma of the second author we obtain better or new results on badly representable key systems, such as showing the most badly representable key system known, namely of size 2(n(1-c.log n/ log n)), where n is the number of attributes. We also make an observation on a theorem of J. Demetrovics, Z. Furedi and the first author and give some new well representable key systems as well.