An alternate proof of Hall's theorem on a conformal mapping inequality.
Balasubramanian, R., Ponnusamy, S. (1996)
Bulletin of the Belgian Mathematical Society - Simon Stevin
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Balasubramanian, R., Ponnusamy, S. (1996)
Bulletin of the Belgian Mathematical Society - Simon Stevin
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Dragan Dimitrovski, Vladimir Rajović (2007)
Kragujevac Journal of Mathematics
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Chang, Der-Chen, Nguyen, Tristan, Wang, Gang, Wereley, Norman M. (2006)
Journal of Inequalities and Applications [electronic only]
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Vladimir I. Rukasov, Olga G. Rovenska (2009)
Acta Universitatis Palackianae Olomucensis. Facultas Rerum Naturalium. Mathematica
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We investigate approximation properties of de la Vallee Poussin right-angled sums on the classes of periodic functions of several variables with a high smoothness. We obtain integral presentations of deviations of de la Vallee Poussin sums on the classes .
Bruce Chalmers, Grzegorz Lewicki (2000)
Annales Polonici Mathematici
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Let V be a two-dimensional real symmetric space with unit ball having 8n extreme points. Let λ(V) denote the absolute projection constant of V. We show that where is the space whose ball is a regular 8n-polygon. Also we reprove a result of [1] and [5] which states that for any two-dimensional real symmetric space V.
Wilkins, J.Ernest jun., Souter, Shantay A. (1995)
Journal of Applied Mathematics and Stochastic Analysis
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Bo Li, Pan Wang (2007)
Formalized Mathematics
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In this article, we prove a series of differentiation identities [3] involving the secant and cosecant functions and specific combinations of special functions including trigonometric, exponential and logarithmic functions.
Wang, Hongyun, Zhou, Hong (2007)
Abstract and Applied Analysis
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d'Azevedo Breda, A.M. (1996)
Portugaliae Mathematica
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Steinhardt, Jacob (2009)
The Electronic Journal of Combinatorics [electronic only]
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Javier Chavarriga (1994)
Applicationes Mathematicae
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We study integrability of two-dimensional autonomous systems in the plane with center type linear part. For quadratic and homogeneous cubic systems we give a simple characterization for integrable cases, and we find explicitly all first integrals for these cases. Finally, two large integrable system classes are determined in the most general nonhomogeneous cases.