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A note on the order of magnitude of certain Titchmarsh-Weyl m-functions

✍ Scribed by B.J. Harris


Publisher
Elsevier Science
Year
1990
Tongue
English
Weight
443 KB
Volume
149
Category
Article
ISSN
0022-247X

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A Note on Riesz Bases of Eigenvectors of
✍ Joseph Lutgen 📂 Article 📅 2001 🏛 Elsevier Science 🌐 English ⚖ 135 KB

## 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