ON TURAN'S INEQUALITY FOR ULTRASPHERICAL POLYNOMIALS

TitleON TURAN'S INEQUALITY FOR ULTRASPHERICAL POLYNOMIALS
Publication TypeJournal Article
Year of Publication2013
AuthorsNikolov G
JournalAnnuaire de l’Université de Sofia “St. Kliment Ohridski”. Faculté de Mathématiques et Informatique
Volume101
KeywordsHermite interpolation formula, Turan-type inequalities, ultraspherical polynomials
Abstract

We present a short proof of the Turan inequality for the ultraspherical polynomials. The proof makes use of the Hermite interpolation formula. A recent renement of Turan's inequality for ultraspherical polynomials [8] is discussed and compared with the known results.

2010 MSC

Primary 41A17, Secondary 33C45

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