Lorentz Spaces
Mostrando 1-4 de 4 artigos, teses e dissertações.
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1. Sobre a geometria de imersÃes isomÃtricas em variedades de Lorentz conformemente estacionÃrias / On the geometry of varieties of isometric immersions in Lorents stationary conformally
In this thesis we study several aspects of the geometry of conformally stationary Lorentz manifolds and, more particularly, of generalized Robertson-Walker spaces, under the presence of a closed conformal vector field. We initiate by focusing our study on the r-stability and on the strong r-stability of closed spacelike hypersurfaces of conformally stationar
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 03/12/2010
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2. Uma extensão da desigualdade de Gagliardo-Nirenberg
Nesta dissertação detalharemos o artigo A Note on div curl Inequalities de L. Lanzani e E. M. Stein [10], cujo resultado principal traz uma extensão da clássica desigualdade de Gagliardo-Nirenberg para q-formas suaves de suporte compacto.
Publicado em: 2008
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3. Auto-similaridade e unicidade para um sistema semilinear e existÃncia de soluÃÃo com dado singular para a equaÃÃo da onda semilinear
We obtain well-posedeness of small global solutions in Marcinkiewicz spaces L(p1,∞) x L(p2,∞) for semilinear systems. Mild solutions are obtained in this space with the right index to allow the existence of self-similar solutions. Using our estimates of the nonlinear coupling term, we prove the uniqueness of solutions in the class C([0,∞);L
Publicado em: 2008
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4. SoluÃÃes auto - similares e comportamento assintÃtico para as equaÃÃes de navier - Stokes
This master dissertation deals with the Navier-Stokes s equations on Rm, assuming that the fluid is incompressible and homogeneous. We analyzed the Cauchy s problem in Marcinkiewicz spaces (L p−weak), with the right index to allow the existence of selfsimilar solutions. We also study the asymptotic behavior of the solutions and show the existence of a
Publicado em: 2008