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Título

Bivariate generating functions for a class of linear recurrences: General structure

Autor Barbero González, Jesús Fernando ; Salas, J.; Villaseñor, Eduardo J. S.
Palabras clave Exponential generating functions
Recurrence equations
Row generating polynomials.
Fecha de publicación 2014
EditorElsevier
Citación Journal of Combinatorial Theory - Series A 125: 146- 165 (2014)
ResumenWe consider Problem 6.94 posed in the book Concrete Mathematics by Graham, Knuth, and Patashnik, and solve it by using bivariate exponential generating functions. The family of recurrence relations considered in the problem contains many cases of combinatorial interest for particular choices of the six parameters that define it. We give a complete classification of the partial differential equations satisfied by the exponential generating functions, and solve them in all cases. We also show that the recurrence relations defining the combinatorial numbers appearing in this problem display an interesting degeneracy that we study in detail. Finally, we obtain for all cases the corresponding univariate row generating polynomials. © 2014 Elsevier Inc.
URI http://hdl.handle.net/10261/110178
DOI10.1016/j.jcta.2014.02.007
Identificadoresdoi: 10.1016/j.jcta.2014.02.007
issn: 1096-0899
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