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Riesz bases of exponential functions in L2

✍ Scribed by S. A. Avdonin

Publisher
Springer US
Year
1977
Tongue
English
Weight
121 KB
Volume
8
Category
Article
ISSN
1573-8795

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## Operator-valued functions of the form compact-valued and holomorphic on certain domains ⍀ ; ‫ރ‬ are considered in separable Hilbert space. Assuming that the resolvent of A is compact, its eigenvalues are simple and the corresponding eigenvectors form a Riesz basis for H H of finite defect, it i