Some results on S-numerical range of operator matrices
DOI:
https://doi.org/10.21271/ZJPAS.32.3.7Keywords:
S-numerical range; projection method; Schro ̈dinger operator; Hain-Lu ̈st operator; Stokes operator.Abstract
A linear operator on a Hilbert space may be approximated with finite matrices by choosing an orthonormal basis of the Hilbert space. In this paper, we found an approximation of the S-numerical range of bounded and unbounded operator matrices by variation methods. Applications to Hain-L st operator and Stokes operator are given.
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Copyright (c) 2020 Berivan Faris Azeez , Ahmed Muhammad
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