35 resultados para INTEGRALS

em Bulgarian Digital Mathematics Library at IMI-BAS


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The aim of this paper is to study a generalized form of elliptic-type integrals which unify and extend various families of elliptic-type integrals studied recently by several authors. In a recent communication [1] we have obtained recurrence relations and asymptotic formula for this generalized elliptic-type integral. Here we shall obtain some more results which are single and multiple integral formulae, differentiation formula, fractional integral and approximations for this class of generalized elliptic-type integrals.

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Mathematics Subject Classification: 26A16, 26A33, 46E15.

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2000 Mathematics Subject Classification: 44A15, 44A35, 46E30

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2000 Math. Subject Classification: Primary 42B20, 42B25, 42B35

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MSC 2010: 03E72, 26E50, 28E10

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2000 Mathematics Subject Classification: Primary 34C07, secondary 34C08.

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2000 Mathematics Subject Classification: 41A25, 41A36.

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* Partially supported by Grant MM523/95 with Ministry of Science and Technologies.

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We prove that in quadratic perturbations of generic Hamiltonian vector fields with two saddle points and one center there can appear at most two limit cycles. This bound is exact.

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The present paper deals with the KAM-theory conditions for systems describing the motion of a particle in central field.

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2000 Mathematics Subject Classification: 26A33 (main), 44A40, 44A35, 33E30, 45J05, 45D05

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Mathematics Subject Classification: 26A33, 33C20.

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2000 Mathematics Subject Classification: Primary 42B20; Secondary 42B15, 42B25

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2000 Mathematics Subject Classification: 26A33, 42B20

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2000 Mathematics Subject Classification: Primary 26A33, 30C45; Secondary 33A35