Newton iteration for the closest normal matrix of order two.
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László, Lajos (2005)
Mathematica Pannonica
Lim, Teck-Cheong (2010)
Fixed Point Theory and Applications [electronic only]
Robert De Vos (1984)
Mathematische Zeitschrift
Bernhard Schmitt (1983)
Numerische Mathematik
Gil, Michael (2005)
ELA. The Electronic Journal of Linear Algebra [electronic only]
Gil, Michael (2011)
ELA. The Electronic Journal of Linear Algebra [electronic only]
W. Gautschi (1974/1975)
Numerische Mathematik
Volkov, Yu.S., Miroshnichenko, V.L. (2009)
Sibirskij Matematicheskij Zhurnal
Juan Jorge Schäffer (1970)
Mathematische Zeitschrift
A. Bunse-Gerstner, R. Byers, ... (1991/1992)
Numerische Mathematik
Omar Hirzallah, Fuad Kittaneh, Khalid Shebrawi (2012)
Studia Mathematica
We derive several numerical radius inequalities for 2 × 2 operator matrices. Numerical radius inequalities for sums and products of operators are given. Applications of our inequalities are also provided.
Li, Chi-Kwong, Tsing, Nam-Kui, Uhlig, Frank (1996)
ELA. The Electronic Journal of Linear Algebra [electronic only]
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