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Superfícies Completas com Curvatura Gaussiana Constante em H2×R e S2×R

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Bibliographic Details
Main Author: CINTRA, Adriana Araujo
Publication Date: 2010
Format: Master thesis
Language: por
Source: Repositório Institucional da UFG
Download full: http://repositorio.bc.ufg.br/tede/handle/tde/1969
Summary: In this work we classify the complete surfaces with constant Gaussian curvature into the H2×R and S2×R.We show that exists a unique complete surface, up to isometries, with positive constant Gaussian curvature into the H2×R, and greater than one, into the S2×R and that there is no complete surfaces with constant Gaussian curvature K(I) < &#8722;1 into the H2×R and S2×R. We prove that even if &#8722;1 &#8804; K(I) < 0 there are infinite complete surfaces into the H2 ×R with Gaussian curvature K(I) and with additional assumption we prove there is if &#8722;1 &#8804; K(I) < 0 and 0 < K(I) < 1 there is no exists complete surfaces into S2×R with Gaussian curvature K(I). These results were obtained by Aledo, Espinar and Gálvez and can be found in [1].