Title of article :
A kind of Eulerian numbers connected to Whitney numbers of Dowling lattices
Author/Authors :
Mez?، نويسنده , , Istv?n، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2014
Abstract :
In 1973 T.A. Dowling constructed a class of geometric lattices with fixed underlying finite groups. Dowling and M. Benoumhani deduced a number of identities satisfied by the Whitney numbers of these lattices. In addition, Remmel and Wachs gave a partition-theoretical interpretation for these numbers. We continue the study of this interpretation introducing an analogue of Eulerian numbers connected to Whitney numbers of the second kind. Moreover, bijective proofs are given for a number of formulas deduced analytically by Benoumhani.
Keywords :
Dowling numbers , Dowling lattices , Whitney numbers , Eulerian numbers
Journal title :
Discrete Mathematics
Journal title :
Discrete Mathematics