25 resultados para Elliptic Galaxies
em Bulgarian Digital Mathematics Library at IMI-BAS
Resumo:
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.
Resumo:
* Work is partially supported by the Lithuanian State Science and Studies Foundation.
Resumo:
2000 Mathematics Subject Classification: 35J40, 49J52, 49J40, 46E30
Resumo:
2000 Mathematics Subject Classification: Primary 34C07, secondary 34C08.
Resumo:
Николай Кутев, Величка Милушева - Намираме експлицитно всичките би-омбилични фолирани полусиметрични повърхнини в четиримерното евклидово пространство R^4
Resumo:
2010 Mathematics Subject Classification: Primary 35S05; Secondary 35A17.
Resumo:
2010 Mathematics Subject Classification: 35B65, 35S05, 35A20.
Resumo:
2010 Mathematics Subject Classification: Primary 35J70; Secondary 35J15, 35D05.
Resumo:
2010 Mathematics Subject Classification: 74J30, 34L30.
Resumo:
2010 Mathematics Subject Classification: 35J65, 35K60, 35B05, 35R05.
Resumo:
2002 Mathematics Subject Classification: 35J15, 35J25, 35B05, 35B50
Resumo:
2000 Mathematics Subject Classification: 35J70, 35P15.
Resumo:
We deal with a class of elliptic eigenvalue problems (EVPs) on a rectangle Ω ⊂ R^2 , with periodic or semi–periodic boundary conditions (BCs) on ∂Ω. First, for both types of EVPs, we pass to a proper variational formulation which is shown to fit into the general framework of abstract EVPs for symmetric, bounded, strongly coercive bilinear forms in Hilbert spaces, see, e.g., [13, §6.2]. Next, we consider finite element methods (FEMs) without and with numerical quadrature. The aim of the paper is to show that well–known error estimates, established for the finite element approximation of elliptic EVPs with classical BCs, hold for the present types of EVPs too. Some attention is also paid to the computational aspects of the resulting algebraic EVP. Finally, the analysis is illustrated by two non-trivial numerical examples, the exact eigenpairs of which can be determined.
Resumo:
We prove some multiplicity results concerning quasilinear elliptic equations with natural growth conditions. Techniques of nonsmooth critical point theory are employed.
Resumo:
* Supported by Ministero dell’Università e della Ricerca Scientifica e Tecnologica (40% – 1993). ** Supported by Ministero dell’Università e della Ricerca Scientifica e Tecnologica (40% – 1993).