Published January 1, 2011 | Version v1
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Necessary conditions for inclusion relations for double absolute summability

  • 1. Istanbul Ticaret Univ, Dept Math, Uskudar Istanbul, Turkey
  • 2. Indiana Univ, Dept Math, Bloomington, IN 47405 USA

Description

We establish necessary conditions for a general inclusion theorem involving a pair of doubly triangular matrices. As corollaries we obtain inclusion results for some special classes of doubly triangular matrices.

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