EMIS ELibM Electronic Journals PUBLICATIONS DE L'INSTITUT MATHÉMATIQUE (BEOGRAD) (N.S.)
Vol. 71(85), pp. 3--7 (2002)

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POSITIVITY ZONES AND NORMS OF $\pmb n$-FOLD CONVOLUTIONS - I

Bogdan M. Baishanski

Department of Mathematics, The Ohio State University, 231 W. 18th Ave., Columbus, OH 43210-1174

Abstract: A general class of sequences $a=\{a_k:-\infty<k<\infty\}$ of real numbers is described which has the property that there exist numbers $c_1,c_2,N$ such that $a_{nk}>0$ for $n>N$, $c_1n\le k\le c_2n$, where $\{a_{nk}:-\infty<k<\infty\}$ is defined as the $n$-fold convolution $a*a*\cdots*a$ of $a$.

Classification (MSC2000): 42A16;42A85;41A58;41A60; 11P99;60F10

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