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Classi cação da Base de Produtos Warped Quase-Solitons de RicciMatos Neto, Manoel Vieira de 02 December 2016 (has links)
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Previous issue date: 2016-12-02 / In this work we introduce the notion of Ricci-Hessian type manifolds (M, g, cp, f, A) which is closely related to the construction of almost Ricci solitons realised as a warped product. We classify certain classes of the Ricci-Hessian type manifolds and derive some implications for almost Ricci solitons and generalised m-quasi-Einstein manifolds. We consider two complementary cases: V f and Vco are linearly independent in C'(M)- module X(M); and V f = hVso for some smooth function h on M. In the first case we show that the vector field VA belongs to the Ce•"(M)-module generated by V f and Vso, while in the second case, under additional hypothesis, the manifold is, around any regular point of f, locally isometric to a warped product. / Nesta tese apresentamos a noção de variedades tipo Ricci-Hessiano f, A) que está intrinsecamente relacionada à construção de quase-sólitons de Ricci que são produtos warped. Classificamos certas classes de variedades tipo Ricci-Hessiano e dedu-zimos algumas implicações para quase-sólitons de Ricci e variedades m-quasi-Einstein generalizadas. Consideramos dois casos complementares: V f e V40 são linearmente in-dependentes no C°°(M)-módulo X(M) e V f = hVg, para alguma função suave h sobre M. No primeiro caso mostramos que o campo vetorial VA pertence ao C°°(M)-módulo gerado por V f e Vyo, enquanto que no segundo caso, sob hipóteses adicionais, a varie-dade é, em uma vizinhança de qualquer ponto regular de f, localmente isométrica a um produto warped.
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