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Flag vectors of Eulerian partially ordered sets

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 نشر من قبل Margaret M. Bayer
 تاريخ النشر 1999
  مجال البحث
والبحث باللغة English
 تأليف Margaret M. Bayer




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The closed cone of flag vectors of Eulerian partially ordered sets is studied. It is completely determined up through rank seven. Half-Eulerian posets are defined. Certain limit posets of Billera and Hetyei are half-Eulerian; they give rise to extreme rays of the cone for Eulerian posets. A new family of linear inequalities valid for flag vectors of Eulerian posets is given.



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