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Matrix mappings and general bounded linear operators on the space bv

  • Ivana Djolović EMAIL logo , Katarina Petković and Eberhard Malkowsky
Published/Copyright: March 31, 2018
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Abstract

If X and Y are FK spaces, then every infinite matrix A ∈ (X, Y) defines a bounded linear operator LAB(X, Y) where LA(x) = Ax for each xX. But the converse is not always true. Indeed, if L is a general bounded linear operator from X to Y, that is, LB(X, Y), we are interested in the representation of such an operator using some infinite matrices. In this paper we establish the representations of the general bounded linear operators from the space bv into the spaces , c and c0. We also prove some estimates for their Hausdorff measures of noncompactness. In this way we show the difference between general bounded linear operators between some sequence spaces and the matrix operators associated with matrix transformations.


Research of the first and the third author supported by the research project #174007 and #174025, respectively, of the Serbian Ministry of Science, Technology and Environmental Development, and of the third author also by the project #114F104 of Tubitak.

Communicated by Werner Timmermann


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Received: 2016-3-11
Accepted: 2016-5-23
Published Online: 2018-3-31
Published in Print: 2018-4-25

© 2018 Mathematical Institute Slovak Academy of Sciences

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