Advanced Search

Query:

Fill in the form and click »Search«...

Format:

Display: entries per page entries

Zbl 0918.05003
Benoumhani, Moussa
Log-concavity of Whitney numbers of Dowling lattices. (English)
[J] Adv. Appl. Math. 22, No.2, 186-189 (1999). ISSN 0196-8858

This paper shows that the generating polynomial of Whitney numbers of the Dowling lattices has only real roots. This gives a new proof (through a result of Newton) that these Whitney numbers form strictly log-concave sequences.
[P.L.Erd\H{o}s (Budapest)]

MSC 2000:: *05A15 Combinatorial enumeration problems
06C10 Geometric lattices

Keywords: Dowling lattice; geometric lattice; log-concave; generating function; Stirling numbers of the second kind; Whitney numbers

Comment on this Item PDF MathML XML ASCII DVI PS BibTeX Online Ordering Article Journal

	Scientific prize winners of the ICM 2010
	Overhang
	Lie groups, physics and geometry. An introduction for physicists, engineers and chemists.

Advanced Search

Zentralblatt MATH Berlin [Germany]