On a Pair of Operator Series Expansions Implying a Variety of Summation Formulas

On a Pair of Operator Series Expansions Implying a Variety of Summation Formulas

Year:    2015

Analysis in Theory and Applications, Vol. 31 (2015), Iss. 3 : pp. 260–282

Abstract

With the aid of Mullin-Rota's substitution rule, we show that the Sheffer-type differential operators together with the delta operators $\Delta$ and $D$ could be used to construct a pair of expansion formulas that imply a wide variety of summation formulas in the discrete analysis and combinatorics. A convergence theorem is established for a fruitful source formula that implies more than 20 noted classical formulas and identities as consequences. Numerous new formulas are also presented as illustrative examples. Finally, it is shown that a kind of lifting process can be used to produce certain chains of $(\infty^m)$ degree formulas for $m\geq 3$ with $m\equiv 1$ (mod 2) and $m\equiv 1$ (mod 3), respectively.

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Journal Article Details

Publisher Name:    Global Science Press

Language:    English

DOI:    https://doi.org/10.4208/ata.2015.v31.n3.5

Analysis in Theory and Applications, Vol. 31 (2015), Iss. 3 : pp. 260–282

Published online:    2015-01

AMS Subject Headings:    Global Science Press

Copyright:    COPYRIGHT: © Global Science Press

Pages:    23

Keywords:    Delta operator Sheffer-type operator $(\infty^m)$ degree formula triplet lifting process.