Sadek Bouroubi
The paper is published:
Rostocker Mathematisches Kolloquium, Rostock. Math. Kolloq.
62, 61 - 70 (2007)
Abstract:
In this paper, we prove some new properties of the sequence of the Bell numbers
and present some results in connection with Engel's
conjecture. In addition, using a new approach we state a stronger
conjecture.
Keywords: Partition lattice; Bell number; variance; mean;
convexity; concavity
karin.martin@uni-rostock.de
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