{ "id": "math/0603408", "version": "v1", "published": "2006-03-16T20:26:41.000Z", "updated": "2006-03-16T20:26:41.000Z", "title": "On Orthogonality Relations for Dual Discrete q-Ultraspherical Polynomials", "authors": [ "Valentyna A. Groza", "Ivan I. Kachuryk" ], "comment": "Published in SIGMA (Symmetry, Integrability and Geometry: Methods and Applications) at http://www.emis.de/journals/SIGMA/", "journal": "SIGMA 2 (2006), 034, 8 pages", "doi": "10.3842/SIGMA.2006.034", "categories": [ "math.CA", "math-ph", "math.MP" ], "abstract": "The dual discrete $q$-ultraspherical polynomials $D_n^{(s)}(\\mu (x;s)|q)$ correspond to indeterminate moment problem and, therefore, have one-parameter family of extremal orthogonality relations. It is shown that special cases of dual discrete $q$-ultraspherical polynomials $D_n^{(s)}(\\mu (x;s)|q)$, when $s=q^{-1}$ and $s=q$, are directly connected with $q^{-1}$-Hermite polynomials. These connections are given in an explicit form. Using these relations, all extremal orthogonality relations for these special cases of polynomials $D_n^{(s)}(\\mu (x;s)|q)$ are found.", "revisions": [ { "version": "v1", "updated": "2006-03-16T20:26:41.000Z" } ], "analyses": { "keywords": [ "dual discrete q-ultraspherical polynomials", "extremal orthogonality relations", "special cases", "indeterminate moment problem", "hermite polynomials" ], "tags": [ "journal article" ], "publication": { "journal": "SIGMA", "year": 2006, "month": "Mar", "volume": 2, "pages": "034" }, "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable", "adsabs": "2006SIGMA...2..034G" } } }