The Multivariate Lah and Stirling Numbers
Amine Belkhir
Faculty of Mathematics
USTHB
BP 32, El Alia 16111
Bab Ezzouar
Algiers
Algeria
Abstract:
An ordered partition of {1, 2, ..., n} into k blocks
B1, B2, ..., Bk
is a partition where the order of blocks is considered. In the present
paper, we consider the case that each block Bi
has ri copies. Using this extension of ordered
set partitions, we introduce a new generalization of the Lah and Stirling
numbers of both kinds which called multivariate Lah and Stirling numbers,
respectively. We study several combinatorial properties such as explicit
formulas, recurrence relations, generating functions, and some convolution
identities.
Full version: pdf,
dvi,
ps,
latex
(Concerned with sequences
A008277
A132393
A271703.)
Received October 27 2019; revised versions received March 14 2020; April
7 2020. Published in Journal of Integer Sequences, April 8 2020.
Return to
Journal of Integer Sequences home page