Journal
NONLINEAR ANALYSIS-THEORY METHODS & APPLICATIONS
Volume 73, Issue 8, Pages 2541-2557Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.na.2010.06.030
Keywords
Sequence spaces; BK-spaces; Matrix transformations; Compact operators; Hausdorff measure of noncompactness
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In the present paper, we establish some identities or estimates for the operator norms and the Hausdorff measures of noncompactness of certain operators given by infinite matrices that map an arbitrary BK-space into the sequence spaces c(0), c, l(infinity) and l(1), and into the matrix domains of triangles in these spaces. Furthermore, by using the Hausdorff measure of noncompactness, we apply our results to characterize some classes of compact operators on the BK-spaces. (C) 2010 Elsevier Ltd. All rights reserved.
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