Resultats globals: 17 registres trobats en 0.02 segons.
Articles, 16 registres trobats
Llibres i col·leccions, 1 registres trobats
Articles 16 registres trobats  1 - 10següent  anar al registre:
1.
On strictly convex central configurations of the 2n-body problem / Barrabés Vera, Esther (Universitat de Girona. Escola Politècnica Superior) ; Cors Iglesias, Josep Maria (Universitat Politècnica de Catalunya. Escola Politècnica Superior d'Enginyeria de Manresa)
We consider planar central configurations of the Newtonian 2n-body problem consisting in two twisted regular n-gons of equal masses. We prove the conjecture that for n≥ 5 all convex central configurations of two twisted regular n-gons are strictly convex.
2019 - 10.1007/s10884-018-9708-5
Journal of dynamics and differential equations, Vol. 31, Issue 4 (December 2019) , p. 2293-2304  
2.
10 p, 419.0 KB A family of stacked central configurations in the planar five-body problem / Cornelio, J. Lino (Universidad Juárez Autónoma de Tabasco. División Académica de Ciencias Básicas (México)) ; Álvarez-Ramírez, Martha (Universidad Autónoma Metropolitana - Unidad Iztapalapa. Departamento de Matemáticas (México)) ; Cors Iglesias, Josep Maria (Universitat Politècnica de Catalunya. Departament de Matemàtiques)
We study planar central configurations of the five-body problem where three bodies, m1,m2 and m3, are collinear and ordered from left to right, while the other two, m4 and m5, are placed symmetrically with respect to the line containing the three collinear bodies. [...]
2017 - 10.1007/s10569-017-9782-8
Celestial Mechanics and Dynamical Astronomy, Vol. 129, Issue 3 (November 2017) , p. 321-328  
3.
7 p, 360.3 KB A note on a family of non-gravitational central force potentials in dimension one / Álvarez-Ramírez, Martha (Universidad Autónoma Metropolitana - Unidad Iztapalapa. Departamento de Matemáticas (México)) ; Corbera Subirana, Montserrat (Universitat de Vic - Universitat Central de Catalunya. Departament de Tecnologies Digitals i de la Informació) ; Cors Iglesias, Josep Maria (Universitat Politècnica de Catalunya. Departament de Matemàtiques) ; García, A. (Universidad Autónoma Metropolitana - Unidad Iztapalapa. Departamento de Matemáticas (México))
In this work, we study a one-parameter family of differential equations and the different scenarios that arise with the change of parameter. We remark that these are not bifurcations in the usual sense but a wider phenomenon related with changes of continuity or differentiability. [...]
2017 - 10.1016/j.aml.2017.04.020
Applied Mathematics Letters, Vol. 74 (December 2017) , p. 74-78  
4.
13 p, 6.1 MB Tails and bridges in the parabolic restricted three-body problem / Barrabés Vera, Esther (Universitat de Girona. Escola Politècnica Superior) ; Cors Iglesias, Josep Maria (Universitat Politècnica de Catalunya. Escola Politècnica Superior d'Enginyeria de Manresa) ; Garcia-Taberner, Laura (Universitat de Girona. Escola Politècnica Superior) ; Ollé, Mercè (Universitat Politècnica de Catalunya. Escola Tècnica Superior d'Enginyeria Industrial de Barcelona)
After a close encounter of two galaxies, bridges and tails can be seen between or around them. A bridge would be a spiral arm between a galaxy and its companion, whereas a tail would correspond to a long and curving set of debris escaping from the galaxy. [...]
2017 - 10.1093/mnras/stx1990
Monthly Notices of the Royal Astronomical Society, Vol. 472, Issue 3 (December 2017) , p. 2554-2568  
5.
10 p, 418.4 KB A special family of stacked central configurations : lagrange plus euler in one / Cornelio, J. Lino (Universidad Juárez Autónoma de Tabasco. División Académica de Ciencias Básicas) ; Álvarez-Ramírez, Martha (Universidad Autónoma Metropolitana - Iztapalapa. Departamento de Matemáticas (México)) ; Cors Iglesias, Josep Maria (Universitat Politècnica de Catalunya. Departament de Matemàtiques)
We show the existence of a family of stacked central configurations in the planar five-body problem with a special property. Three bodies m1 , m2 and m3 , ordered from left to right, are collinear and form an Euler central configuration, and the other two bodies m4 and m5 , together with m2 are at the vertices of an equilateral triangle and form a Lagrange central configuration.
2019 - 10.1007/s10884-018-9647-1
Journal of dynamics and differential equations, Vol. 31, Issue 2 (June 2019) , p. 711-718  
6.
15 p, 488.5 KB On central configurations of the κn-body problem / Barrabés Vera, Esther (Universitat de Girona) ; Cors Iglesias, Josep Maria (Universitat Politècnica de Catalunya)
We consider planar central configurations of the Newtonian κn-body problem consisting in κ groups of regular n-gons of equal masses, called (κ,n)-crown. We derive the equations of central configurations for a general (κ,n)-crown. [...]
2019 - 10.1016/j.jmaa.2019.04.010
Journal of mathematical analysis and applications, Vol. 476, Núm. 2 (August 2019) , p. 720-736  
7.
31 p, 10.1 MB Trapezoid central configurations / Corbera Subirana, Montserrat (Universitat de Vic. Departament d'Enginyeries) ; Cors Iglesias, Josep Maria (Universitat Politècnica de Catalunya. Departament de Matemàtiques) ; Llibre, Jaume (Universitat Autònoma de Barcelona. Departament de Matemàtiques) ; Pérez-Chavela, Ernesto (UAM-Iztapalapa(México). Departamento de Matemáticas)
We classify all planar four-body central configurations where two pairs of the bodies are on parallel lines. Using cartesian coordinates, we show that the set of four-body trapezoid central configurations with positive masses forms a two-dimensional surface where two symmetric families, the rhombus and isosceles trapezoid, are on its boundary. [...]
2019 - 10.1016/j.amc.2018.10.066
Applied Mathematics and Computation, Vol. 346 (April 2019) , p. 127-142  
8.
8 p, 285.3 KB A Four-body convex central configuration with perpendicular diagonals is necessarily a kite / Corbera Subirana, Montserrat (Universitat de Vic. Departament d'Enginyeries) ; Cors Iglesias, Josep Maria (Universitat Politècnica de Catalunya. Departament de Matemàtiques) ; Roberts, Gareth E. (College of the Holy Cross. Department of Mathematics and Computer Science)
We prove that any four-body convex central configuration with perpendicular diagonals must be a kite configuration. The result extends to general power-law potential functions, including the planar four-vortex problem.
2018 - 10.1007/s12346-017-0238-z
Qualitative theory of dynamical systems, Vol. 17, issue 2 (Jul. 2018) , p. 367-374  
9.
24 p, 2.5 MB Spatial collinear restricted 4-body problem with repulsive Manev potential / Barrabés Vera, Esther (Universitat de Girona. Departament d'Informàtica Matemàtica Aplicada i Estadística) ; Cors Iglesias, Josep Maria (Universitat Politècnica de Catalunya. Departament de Matemàtiques) ; Vidal, Claudio (Universidad del Bío-Bío (Xile). Departament de Matemática)
We outlines some aspects of the dynamics of an infinitesimal mass under the Newtonian attraction of three point masses in a symmetric collinear relative equilibria configuration when a repulsive Manev potential (-1/r e/r^2), e > 0, is applied to the central mass. [...]
2017 - 10.1007/s10569-017-9771-y
Celestial Mechanics & Dynamical Astronomy. An International Journal of Space Dynamics, 2017, p. 1-24  
10.
9 p, 245.8 KB Uniqueness results for co-circular central configurations for power-law potentials / Cors Iglesias, Josep Maria (Universitat Politècnica de Catalunya. Departament de Matemàtica Aplicada III) ; Hall, Glen Richard (Boston University. Department of Mathematics and Statistics) ; Roberts, Gareth E. (College of the Holy Cross. Dept. of Mathematics and Computer Science)
For a class of potential functions including those used for the planar n-body and n-vortex problems, we investigate co-circular central configurations whose center of mass coincides with the center of the circle containing the bodies. [...]
2014 - 10.1016/j.physd.2014.05.003
Physica D. Nonlinear phenomena, Vol. 280-281 (2014) , p. 44-47  

Articles : 16 registres trobats   1 - 10següent  anar al registre:
Llibres i col·leccions 1 registres trobats  
1.
4 p, 242.3 KB Convex central configurations of two twisted n-gons / Barrabés Vera, Esther (Universitat de Girona. Departament d'Informàtica i Matemàtica Aplicada) ; Cors Iglesias, Josep Maria (Universitat Politècnica de Catalunya. Departament de Matemàtica Aplicada III)
Extended Conference abstract corresponding to talk given at the "Conference on Hamiltonian Systems and Celestial Mechanics 2014" (HAMSYS2014) held at the Centre de Recerca Matemàtica (CRM) in Barcelona from June 2nd to 6th, 2014. [...]
Cham, etc : Birkhäuser, cop. 2015 (Trends in mathematics. Research perspectives CRM Barcelona ; 4) - 10.1007/978-3-319-22129-8_3
Extended Abstracts Spring 2014, part 1- Hamiltonian Systems and Celestial Mechanics, 2015, p. 17-21  

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