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Existence of strong M-bases in nonseparable Banach spaces

Author: Diana Stoeva

In the paper the important question on existence of strong M-bases is considered. A new kind resolution of identity is introduced. Based on this resolution, necessary and sufficient conditions for existence of strong M-bases are determined. As a consequence, the existence of strong M-bases in certain Banach spaces is shown.

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Keywords: strong M-basis, resolution of identity, WLD-, WCD-, WCG-space, compact of Valdivia, of Eberlein, of Gulko, of Corson
2000 MSC: 46B26