Found 15 Documents (Results 1–15)
Topological properties of the block numerical range of operator matrices. (English) Zbl 1516.47007
Reviewer: Monika Winklmeier (Bogotá)
Block numerical range and estimable decomposition of some hyponormal operators. (English) Zbl 1442.47014
Block numerical range and estimable total decompositions of normal operators. (English) Zbl 07089814
Spectral inclusion for unbounded diagonally dominant \(n\times n\) operator matrices. (English) Zbl 1509.47005
The numerical range of positive operators on Banach lattices. (English) Zbl 1342.47007
Reviewer: Maryam Khosravi (Kerman)
Investigations of the numerical range of a operator matrix. (Russian. English summary) Zbl 1413.81022
The numerical range of positive operators on Hilbert lattices. (English) Zbl 1282.47058
Reviewer: Şafak Alpay (Ankara)
Approximation of the quadratic numerical range of block operator matrices. (English) Zbl 1277.47009
Reviewer: Janko Bračič (Ljubljana)
The block numerical range of matrix polynomials. (English) Zbl 1162.15304
MSC:
15A60
On the block numerical range of nonnegative matrices. (English) Zbl 1159.15306
Behrndt, Jussi (ed.) et al., Spectral theory in inner product spaces and applications. Papers of the 6th workshop on operator theory in Krein spaces and operator polynomials, TU Berlin, Germany, December 14–17, 2006. Basel: Birkhäuser (ISBN 978-3-7643-8910-9/hbk). Operator Theory: Advances and Applications 188, 113-133 (2009).
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