TY - JOUR ID - TI - Some results on S-numerical range of operator matrices AU - Berivan faris azeez AU - Ahmed Muhammad PY - 2020 VL - 32 IS - 3 SP - 57 EP - 63 JO - Zanco Journal of Pure and Applied Sciences مجلة زانكۆ للعلوم الصرفة والتطبيقية SN - 22180230 24123986 AB - 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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