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On the Essential Spectra of Symmetric Operators in Hilbert Space

✍ Scribed by Philip Hartman


Book ID
120555971
Publisher
John Hopkins University Press
Year
1953
Tongue
English
Weight
888 KB
Volume
75
Category
Article
ISSN
0002-9327

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On the Essential Spectrum of a Class of
✍ Manfred MΓΆller πŸ“‚ Article πŸ“… 1998 πŸ› John Wiley and Sons 🌐 English βš– 513 KB

Abrtract. Sufficient conditions are given such that the product T1T2 of two unbounded operators in Hilbert spaces is essentially selfadjoint and that the nonzero numbers in the essential spectrum of the closure of TlT2 coincide with the nonzero numbers in the essential spectrum of T2T1. If the essen