Photographic Determination of Heliographic Coordinates of Sunspots Without Taking Double Photos
Aleksandar Tomić (1976)
Publications of Department of Astronomy
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Aleksandar Tomić (1976)
Publications of Department of Astronomy
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Lu, Youmin, Shao, Zhoude (2004)
International Journal of Mathematics and Mathematical Sciences
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H. Fath el Bab (1977)
Czechoslovak Mathematical Journal
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Bassali, W.A. (1986)
International Journal of Mathematics and Mathematical Sciences
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Robin W. Tucker, R. S. Tung, C. Wang (1999)
Extracta Mathematicae
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Milan Práger (1998)
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A boundary value problem for the Laplace equation with Dirichlet and Neumann boundary conditions on an equilateral triangle is transformed to a problem of the same type on a rectangle. This enables us to use, e.g., the cyclic reduction method for computing the numerical solution of the problem. By the same transformation, explicit formulae for all eigenvalues and all eigenfunctions of the corresponding operator are obtained.
Lažetić, Nebojša L. (1985)
Publications de l'Institut Mathématique. Nouvelle Série
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