English

Inversion formula with hypergeometric polynomials and its application to an integral equation

Classical Analysis and ODEs 2019-04-18 v1 Discrete Mathematics Performance

Abstract

For any complex parameters xx and ν\nu, we provide a new class of linear inversion formulas T=A(x,ν)SS=B(x,ν)TT = A(x,\nu) \cdot S \Leftrightarrow S = B(x,\nu) \cdot T between sequences S=(Sn)nNS = (S_n)_{n \in \mathbb{N}^*} and T=(Tn)nNT = (T_n)_{n \in \mathbb{N}^*}, where the infinite lower-triangular matrix A(x,ν)A(x,\nu) and its inverse B(x,ν)B(x,\nu) involve Hypergeometric polynomials F()F(\cdot), namely {An,k(x,ν)=(1)k(nk)F(kn,nν;n;x),Bn,k(x,ν)=(1)k(nk)F(kn,kν;k;x) \left\{ \begin{array}{ll} A_{n,k}(x,\nu) = \displaystyle (-1)^k\binom{n}{k}F(k-n,-n\nu;-n;x), \\ B_{n,k}(x,\nu) = \displaystyle (-1)^k\binom{n}{k}F(k-n,k\nu;k;x) \end{array} \right. for 1kn1 \leqslant k \leqslant n. Functional relations between the ordinary (resp. exponential) generating functions of the related sequences SS and TT are also given. These new inversion formulas have been initially motivated by the resolution of an integral equation recently appeared in the field of Queuing Theory; we apply them to the full resolution of this integral equation. Finally, matrices involving generalized Laguerre polynomials polynomials are discussed as specific cases of our general inversion scheme.

Keywords

Cite

@article{arxiv.1904.08283,
  title  = {Inversion formula with hypergeometric polynomials and its application to an integral equation},
  author = {Ridha Nasri and Alain Simonian and Fabrice Guillemin},
  journal= {arXiv preprint arXiv:1904.08283},
  year   = {2019}
}

Comments

22 pages, no figure

R2 v1 2026-06-23T08:42:45.629Z