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Congruent spectrum for compact linear relations - MaRDI portal

Congruent spectrum for compact linear relations (Q2834181)

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scientific article; zbMATH DE number 6656676
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Congruent spectrum for compact linear relations
scientific article; zbMATH DE number 6656676

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    Congruent spectrum for compact linear relations (English)
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    25 November 2016
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    linear relation
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    congruent spectrum
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    Fredholm operator
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    Several aspects of linear relations (i.e., multivalued linear operators) are studied in this paper. In particular, the notion of congruent relation is introduced and studied; roughly, a congruent relation is a relation with equal defect numbers. The authors also introduce the spectrum associated with this class, called congruent spectrum, and prove, in this context, a spectral mapping theorem.
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