{ "id": "math/9404224", "version": "v1", "published": "1994-04-22T00:00:00.000Z", "updated": "1994-04-22T00:00:00.000Z", "title": "Explicit representations of biorthogonal polynomials", "authors": [ "Arieh Iserles", "Syvert Paul Nørsett" ], "categories": [ "math.CA" ], "abstract": "Given a parametrised weight function $\\omega(x,\\mu)$ such that the quotients of its consecutive moments are M\\\"obius maps, it is possible to express the underlying biorthogonal polynomials in a closed form \\cite{IN2}. In the present paper we address ourselves to two related issues. Firstly, we demonstrate that, subject to additional assumptions, every such $\\omega$ obeys (in $x$) a linear differential equation whose solution is a generalized hypergeometric function. Secondly, using a generalization of standard divided differences, we present a new explicit representation of the underlying orthogonal polynomials.", "revisions": [ { "version": "v1", "updated": "1994-04-22T00:00:00.000Z" } ], "analyses": { "keywords": [ "explicit representation", "linear differential equation", "underlying orthogonal polynomials", "standard divided differences", "generalized hypergeometric function" ], "publication": { "doi": "10.1007/BF02198296", "journal": "Numerical Algorithms", "year": 1995, "month": "Mar", "volume": 10, "number": 1, "pages": 51 }, "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable", "adsabs": "1995NuAlg..10...51I" } } }