Resultados globales: 2 registros encontrados en 0.03 segundos.
Artículos, Encontrados 2 registros
Artículos Encontrados 2 registros  
1.
31 p, 502.7 KB Second order geometry of spacelike surfaces in de Sitter 5-space / Kasedou, Masaki (National Institute of Technology (Akita, Japó). Institute of Natural Science) ; Nabarro, Ana Claudia (Universidade de Sao Paulo. Instituto de Ciências Matemáticas e de Computaçao) ; Soares Ruas, Maria Aparecida (Universidade de Sao Paulo. Instituto de Ciências Matemáticas e de Computaçao)
The de Sitter space is known as a Lorentz space with positive constant curvature in the Minkowski space. A surface with a Riemannian metric is called a spacelike surface. In this work we investigate properties of the second order geometry of spacelike surfaces in de Sitter space S5 1 by using the action of GL(2,R) X SO(1,2) on the system of conics defined by the second fundamental form. [...]
2015 - 10.5565/PUBLMAT_59215_07
Publicacions matemàtiques, Vol. 59 Núm. 2 (2015) , p. 449-477 (Articles)  
2.
53 p, 544.2 KB Singularity theory and forced symmetry breaking in equations / Furter, Jacques-Elie (Brunel University (Gran Bretanya). Department of Mathematical Sciences) ; Soares Ruas, Maria Aparecida (Universidade de Säo Paulo. Departamento de Matemática) ; Sitta, Angela Maria (Universidade Estadual Paulista (Brasil). Departamento de Matemática) ; Instituto de Ciências Matemáticas e de Computaçäo (Brasil)
A theory of bifurcation equivalence for forced symmetry breaking bifurcation problems is developed. We classify (O(2), 1) problems of corank 2 of low codimension and discuss examples of bifurcation problems leading to such symmetry breaking.
2010 - 10.5565/PUBLMAT_54210_01
Publicacions matemàtiques, Vol. 54, Núm. 2 (2010) , p. 263-315  

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