Computing c-numerical range of diferential operator matrices

Ahmed Muhammad, Wlat Hamad


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 establish an approximation
of the  c-numerical range of bounded and unbounded
operator matrices by variational methods. Application to
Schrodinger operator, and Hain-Lust operator are given.


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