Bourgin-Yang-type theorem for <mml:math> <mml:mi>a</mml:mi> </mml:math>-compact perturbations of closed operators. Part I. The case of index theories with dimension property

<p>A variant of the Bourgin-Yang theorem for <mml:math> <mml:mi>a</mml:mi> </mml:math>-compact perturbations of a closed linear operator (in general, unbounded and having an infinite-dimensional kernel) is proved. An application to integrodifferential equations is dis...

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Bibliographic Details
Format: Article
Language:English
Published: Hindawi Limited 2006-01-01
Series:Abstract and Applied Analysis
Online Access:http://www.hindawi.com/GetArticle.aspx?doi=10.1155/AAA/2006/78928