IBP-EC
1995/03:
Rapport de Recherche EC /
EC research reports
17 pages - Mars/March 1995 -
Document en anglais.
PostScript : Ko /Kb
Titre / Title: ON THE MÖBIUS ALGEBRA OF GEOMETRIC LATTICES
Abstract : The Möbius algebra of a poset has been introduced by Solomon and also studied by Greene in the special case of lattices. Let L denote a geometric lattice. Our key idea is to consider all the characteristic polynomials of upper intervals in L as components of a same object, which is multiplicative. Now, by simple algebraic means we get new identities involving the characteristic polynomial and the Tutte polynomial of a geometric lattice.