Open AccessConvexity preserving summability matrices
Author(s) -
C. Selvaraj
Publication year - 1989
Publication title -
international journal of mathematics and mathematical sciences
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 39
eISSN - 1687-0425
pISSN - 0161-1712
DOI - 10.1155/s0161171290000722
Subject(s) - convexity , mathematics , pure mathematics , combinatorics , mathematical analysis , economics , financial economics
The main result of this paper gives the necessary and sufficient conditions for the Abel matrices to preserve the convexity of sequences. Also, the higher orders of the Cesáro method are shown to be convexity-preserving matrices
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