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Hierarchical Dobi ski-type relations via substitution and the moment problem

Penson, K. A.; Blasiak, P.; Duchamp, G.; Horzela, A. and Solomon, A. I. (2004). Hierarchical Dobi ski-type relations via substitution and the moment problem. Journal of Physics A: Mathematical and General, 37(10) pp. 3475–3487.

DOI (Digital Object Identifier) Link: http://dx.doi.org/10.1088/0305-4470/37/10/011
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Abstract

We consider the transformation properties of integer sequences arising from the normal ordering of exponentiated boson ([a, a†] = 1) monomials of the form exp[λ(a†)ra], r = 1, 2, ..., under the composition of their exponential generating functions. They turn out to be of Sheffer type. We demonstrate that two key properties of these sequences remain preserved under substitutional composition: (a) the property of being the solution of the Stieltjes moment problem; and (b) the representation of these sequences through infinite series (Dobiński-type relations). We present a number of examples of such composition satisfying properties (a) and (b). We obtain new Dobiński-type formulae and solve the associated moment problem for several hierarchically defined combinatorial families of sequences.

Item Type: Journal Article
Copyright Holders: 2004 IOP Publishing Limited
ISSN: 1751-8121
Academic Unit/Department: Science > Physical Sciences
Item ID: 19315
Depositing User: Colin Smith
Date Deposited: 22 Dec 2009 10:34
Last Modified: 02 Dec 2010 20:43
URI: http://oro.open.ac.uk/id/eprint/19315
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