Nonlinear stationary surface waves above an underwater ridge.
Kuznetsov, D.S. (2002)
Sibirskij Matematicheskij Zhurnal
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Kuznetsov, D.S. (2002)
Sibirskij Matematicheskij Zhurnal
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Bruce C. Berndt, Heng Huat Chan, Liang-Cheng Zhang (1995)
Acta Arithmetica
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Soon-Yi Kang (1999)
Acta Arithmetica
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Bruce C. Berndt, Heng Huat Chan, Liang-Cheng Zhang (1998)
Acta Arithmetica
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Maohua Le (1996)
Acta Arithmetica
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Michael Filaseta, Ognian Trifonov (1994)
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Michal Černý (2012)
Kybernetika
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The Löwner-John ellipse of a full-dimensional bounded convex set is a circumscribed ellipse with the property that if we shrink it by the factor (where is dimension), we obtain an inscribed ellipse. Goffin’s algorithm constructs, in polynomial time, a tight approximation of the Löwner-John ellipse of a polyhedron given by facet description. In this text we adapt the algorithm for zonotopes given by generator descriptions. We show that the adapted version works in time polynomial...
Mikhajlov, G.A., Burmistrov, A.V. (2000)
Siberian Mathematical Journal
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Hong-Quan Liu (1993)
Acta Arithmetica
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1. Introduction. The aim of this paper is to supply a still better result for the problem considered in [2]. Let A(x) denote the number of distinct abelian groups (up to isomorphism) of orders not exceeding x. We shall prove Theorem 1. For any ε > 0, , where C₁, C₂ and C₃ are constants given on page 261 of [2]. Note that 50/199=0.25125..., thus improving our previous exponent 40/159=0.25157... obtained in [2]. To prove Theorem 1, we shall proceed along the line of approach presented...