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A Classification of Homogeneous Operators in the Cowen-Douglas Class

✍ Scribed by Adam Korányi; Gadadhar Misra


Publisher
SP Birkhäuser Verlag Basel
Year
2009
Tongue
English
Weight
187 KB
Volume
63
Category
Article
ISSN
0378-620X

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On the Essential Spectrum of a Class of
✍ Manfred Möller 📂 Article 📅 1998 🏛 John Wiley and Sons 🌐 English ⚖ 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