On the convergence of approximate iterations for an abstract equation
M. Kwapisz (1969)
Annales Polonici Mathematici
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M. Kwapisz (1969)
Annales Polonici Mathematici
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Z. Kowalski (1963)
Annales Polonici Mathematici
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Rozehnalová, Petra
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Using the high order Trefftz finite element method for solving partial differential equation requires numerical integration of oscillating functions. This integration could be performed, instead of classic techniques, also by the Levin method with some modifications. This paper shortly describes both the Trefftz method and the Levin method with its modification.
Anita Dobek (2008)
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J. S. Chomicz, A. Olejniczak, M. Szyszkowicz (1983)
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Mohammad Ali Ardalani (2014)
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We introduce new concepts of numerical range and numerical radius of one operator with respect to another one, which generalize in a natural way the known concepts of numerical range and numerical radius. We study basic properties of these new concepts and present some examples.
E. Cancès, S. Labbé (2012)
ESAIM: Proceedings
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Dostál, Michal
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M. Życzkowski (1965)
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Křížek, Michal
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