Euler Enumeration and Beyond
نویسنده
چکیده
This paper surveys recent results for flag enumeration of polytopes, Bruhat graphs, balanced digraphs, Whitney stratified spaces and quasi-graded posets.
منابع مشابه
Euler flag enumeration of Whitney stratified spaces
The idea of enumeration using the Euler characteristic was suggested throughout Rota’s work and influenced by Schanuel’s categorical viewpoint [33, 40, 41, 42]. In order to carry out such a program that is topologically meaningful and which captures the broadest possible classes of examples, two key insights are required. First, the notion of grading in the face lattice of a polytope must be re...
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تاریخ انتشار 2015