The Baskakov operators for functions of two variables.
M. Gurdek, L. Rempulska, M. Skorupka (1999)
Collectanea Mathematica
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M. Gurdek, L. Rempulska, M. Skorupka (1999)
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Manfred Müller (1978)
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Gunther Schmidt (1995)
Atti della Accademia Nazionale dei Lincei. Classe di Scienze Fisiche, Matematiche e Naturali. Rendiconti Lincei. Matematica e Applicazioni
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The paper discusses new cubature formulas for classical integral operators of mathematical physics based on the «approximate approximation» of the density with Gaussian and related functions. We derive formulas for the cubature of harmonic, elastic and diffraction potentials approximating with high order in some range relevant for numerical computations. We prove error estimates and provide numerical results for the Newton potential.
C. G. G. Van Herk (1951)
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Imre Z. Ruzsa, Andrzej Schinzel (1995)
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O. Fomenko (1961)
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Z. Ciesielski (1963)
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