On incidence algebras description of cobweb posets

Details On incidence algebras description of cobweb posets On incidence algebras description of cobweb posets

2008-02-26

arxiv.org/abs/0802.3703v1

Mathematics

Combinatorics

9 pages

Scientific paper

The explicite formulas for Mobius function and some other important elements of the incidence algebra of an arbitrary cobweb poset are delivered. For that to do one uses Kwasniewski's construction of his cobweb posets . The digraph representation of these cobweb posets constitutes a newly discovered class of orderable DAG's named here down KoDAGs with a kind of universality now being investigated. Namely cobweb posets' and thus KoDAGs's defining di-bicliques are links of any complete relations' chains.

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