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pro vyhledávání: '"Gomes, José Nazareno Vieira"'
We establish the necessary and sufficient conditions for constructing gradient Einstein-type warped metrics. One of these conditions leads us to a general Lichnerowicz equation with analytic and geometric coefficients for this class of metrics on the
Externí odkaz:
http://arxiv.org/abs/2407.10337
We use variational methods to derive Hadamard-type formulae for the eigenvalues of a class of elliptic operators on a compact Riemannian manifold $M$. We then apply the latter in the following context. Consider a family of elliptic operators which is
Externí odkaz:
http://arxiv.org/abs/2306.06504
Publikováno v:
Mathematische Nachrichten, 2024
We compute a lower bound for the scalar curvature of a gradient Einstein soliton under a certain assumption on its potential function. We establish an asymptotic behavior of the potential function on a noncompact gradient shrinking Einstein soliton.
Externí odkaz:
http://arxiv.org/abs/2208.01025
We deal with rigidity results for compact gradient Einstein-type manifolds with nonempty boundaries. As a result, we obtain new characterizations for hemispheres and geodesic balls in simply connected space forms. In dimensions three and five, we obt
Externí odkaz:
http://arxiv.org/abs/2205.07827
Autor:
Gomes, José Nazareno Vieira
Publikováno v:
Biblioteca Digital de Teses e Dissertações da UFAMUniversidade Federal do AmazonasUFAM.
Made available in DSpace on 2015-04-22T22:16:04Z (GMT). No. of bitstreams: 1 Jose Nazareno Vieira Gomes.pdf: 449205 bytes, checksum: ed034dfcd18d705f7d20d12e963faffc (MD5) Previous issue date: 2008-09-15
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Externí odkaz:
http://tede.ufam.edu.br/handle/tede/3668
Autor:
Gomes, José Nazareno Vieira
Publikováno v:
Differential Geometry and its Applications 66 (2019) 13-22
In this note, we show that a nontrivial, compact, degenerate or nondegenerate, gradient Einstein-type manifold of constant scalar curvature is isometric to the standard sphere with a well defined potential function. Moreover, under some geometric ass
Externí odkaz:
http://arxiv.org/abs/1710.10549
Autor:
Gomes, José Nazareno Vieira
Publikováno v:
Repositório Institucional da UFCUniversidade Federal do CearáUFC.
GOMES, José Nazareno Vieira. Rigidez de superfícies de contato e caracterização de variedades riemannianas munidas de um campo conforme ou de alguma métrica especial. 2012. 91 f. Tese (Doutorado em Matemática) – Centro de Ciências, Universid
Externí odkaz:
http://www.repositorio.ufc.br/handle/riufc/4082
Autor:
Gomes, José Nazareno Vieira
Publikováno v:
In Differential Geometry and its Applications October 2019 66:13-22
Autor:
Gomes, José Nazareno Vieira
Publikováno v:
Repositório Institucional da Universidade Federal do Ceará (UFC)
Universidade Federal do Ceará (UFC)
instacron:UFC
Universidade Federal do Ceará (UFC)
instacron:UFC
This thesis is composed of four distinct parts. In the first part, we shall give a new characterization of the Euclidean sphere as the only compact Riemannian manifold with constant scalar curvature carrying a conformal vector eld non-trivial which i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=od______3056::49375f8a4c748b56a6f36f7bcf8a37ab
http://www.repositorio.ufc.br/handle/riufc/4082
http://www.repositorio.ufc.br/handle/riufc/4082
Autor:
Batista, Elismar Dias
Publikováno v:
Biblioteca Digital de Teses e Dissertações da UFG
Universidade Federal de Goiás (UFG)
instacron:UFG
Universidade Federal de Goiás (UFG)
instacron:UFG
Neste trabalho, estudamos estruturas gradiente Einstein-type imersas em um espaço produto torcido de um intervalo I e uma variedade Riemanniana M, com função potencial h dada pela função altura. Primeiramente, obtivemos condições para que uma
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=od______3056::cfb2dbb36b11120334d78b13e9fe32c6
http://repositorio.bc.ufg.br/tede/handle/tede/12070
http://repositorio.bc.ufg.br/tede/handle/tede/12070