Derivation of BDF coefficients for equidistant time step
Vlasák, Miloslav, Vlasáková, Zuzana
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We present the derivation of the explicit formulae of BDF coefficients for equidistant time step.
Vlasák, Miloslav, Vlasáková, Zuzana
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We present the derivation of the explicit formulae of BDF coefficients for equidistant time step.
Jerzy Pogonowski (2018)
Annales Universitatis Paedagogicae Cracoviensis | Studia ad Didacticam Mathematicae Pertinentia
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Tłumaczenie
Paul Pollack (2011)
Colloquium Mathematicae
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M. Chrobak, M. Habib, P. John, H. Sachs, H. Zernitz, J. R. Reay, G. Sierksma, M. M. Sysło, T. Traczyk, W. Wessel (1987)
Applicationes Mathematicae
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Claude Le Bris, Anthony T. Patera (2009)
ESAIM: Mathematical Modelling and Numerical Analysis
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Heinz Neudecker (1989)
Qüestiió
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A matrix derivation of a well-known representation theorem for (tr A) is given, which is the solution of a restricted maximization problem. The paper further gives a solution of the corresponding restricted minimization problem.
Jiří Ivánek, Josef Švenda, Jan Ferjenčík (1989)
Kybernetika
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Heinz Neudecker (2004)
SORT
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The main aim is to estimate the noncentrality matrix of a noncentral Wishart distribution. The method used is Leung's but generalized to a matrix loss function. Parallelly Leung's scalar noncentral Wishart identity is generalized to become a matrix identity. The concept of Löwner partial ordering of symmetric matrices is used.
Jiasen Sun, Rui Yang, Xiang Ji, Jie Wu (2017)
Kybernetika
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Data envelopment analysis (DEA) is a methodology for measuring best relative efficiencies of a group of peer decision-making units (DMUs) that take multiple inputs to produce multiple outputs. However, the traditional DEA model only aims to maximize the efficiency of the DMU under evaluation. This usually leads to very small weights (even zero weights) being assigned to some inputs or outputs. Correspondingly, these inputs or outputs have little or even no contribution to efficiency,...
Witold Mozgawa, Magdalena Skrzypiec (2012)
Annales Universitatis Mariae Curie-Sklodowska, sectio A – Mathematica
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Some properties of secantoptics of ovals defined by Skrzypiec in 2008 were proved by Mozgawa and Skrzypiec in 2009. In this paper we generalize to this case results obtained by Cieslak, Miernowski and Mozgawa in 1996 and derive an integral formula for an annulus bounded by a given oval and its secantoptic. We describe the change of the area bounded by a secantoptic and find the differential equation for this function. We finish with some examples illustrating the above results. ...