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Quantities characterizing semi-Fredholm operators and perturbation radii

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Abstract: We show that none of the operational quantities that have been introduced to characterize the upper or the lower semi-Fredholm operators is equivalent to the corresponding perturbation radius.

 Authorship: González M., Martinón A.,

 Fuente: Journal of Mathematical Analysis and Applications, 2012, 390(1), 362-367

 Publisher: Academic Press Inc.

 Publication date: 01/01/2012

 No. of pages: 6

 Publication type: Article

 DOI: 10.1016/j.jmaa.2012.01.048

 ISSN: 0022-247X,1096-0813

 Spanish project: MTM2010-20190

 Publication Url: https://doi.org/10.1016/j.jmaa.2012.01.048

Authorship

MANUEL GONZALEZ ORTIZ

MARTINÓN, ANTONIO

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