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Quasi-Varieties, Congruences, and Generalized Dowling Lattices

Authors
Journal
Journal of Algebraic Combinatorics
0925-9899
Publisher
Springer-Verlag
Publication Date

Abstract

Dowling lattices and their generalizations introduced by Hanlon are interpreted as lattices of congruences associated to certain quasi-varieties of sets with group actions. This interpretation leads, by a simple application of Möbius inversion, to polynomial identities which specialize to Hanlon's evaluation of the characteristic polynomials of generalized Dowling lattices. Analogous results are obtained for a few other quasi-varieties.

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