Zobrazeno 1 - 10
of 424
pro vyhledávání: '"Abraao P"'
Publikováno v:
Revista de Educação e Pesquisa em Contabilidade, Vol 1, Iss 2, Pp 1-21 (2007)
Com as mudanças ocorridas no cenário mundial, cresceu a pressão por informações sobre a influência das atividades da empresas na sociedade. A Contabilidade Social apresenta-se como o ramo da contabilidade responsável por prestar informações
Externí odkaz:
https://doaj.org/article/7989a79410cc4dbd8d08dff64dfeb004
We consider slow-roll inflation in the context of a modified Brans-Dicke dilaton gravity. From a two self-interacting potentials $V(\phi)$, we reproduce a Starobinsky-like potential and, commonly in syperstring models, an exponential tail potential $
Externí odkaz:
http://arxiv.org/abs/2409.02975
Autor:
Galloway, Gregory J., Mendes, Abraão
In this note, we consider some initial data rigidity results concerning marginally outer trapped surfaces (MOTS). As is well known, MOTS play an important role in the theory of black holes and, at the same time, are interesting spacetime analogues of
Externí odkaz:
http://arxiv.org/abs/2407.16101
Autor:
Galloway, Gregory J., Mendes, Abraão
The aim of this paper is to extend some basic results about marginally outer trapped surfaces to the context of surfaces having general null expansion. Motivated in part by recent work of Chai-Wan, we introduce the notion of $\mathfrak{g}$-stability
Externí odkaz:
http://arxiv.org/abs/2404.02019
This paper simplifies the induced four-dimensional gravitational equations originating from a five-dimensional bulk within the framework of Nash's embeddings, incorporating them into a well-known $\mu-\Sigma$ modified gravity (MG) parametrization. By
Externí odkaz:
http://arxiv.org/abs/2403.13860
The cosmic acceleration problem remains one of the most significant challenges in cosmology. One of the proposed solutions to this problem is the modification of gravity on large scales. In this paper, we explore the well-known $\mu$-$\Sigma$ paramet
Externí odkaz:
http://arxiv.org/abs/2309.15781
Autor:
Mazet, Laurent, Mendes, Abraão
In this paper we prove a rigidity statement for free boundary minimal surfaces produced via min-max methods. More precisely, we prove that for any Riemannian metric $g$ on the 3-ball $B$ with non-negative Ricci curvature and $\mathrm{II}_{\partial B}
Externí odkaz:
http://arxiv.org/abs/2307.03624
Autor:
Galloway, Gregory J., Mendes, Abraão
In this paper, we prove several rigidity results for compact initial data sets, in both the boundary and no boundary cases. In particular, under natural energy, boundary, and topological conditions, we obtain a global version of the main result in [1
Externí odkaz:
http://arxiv.org/abs/2301.00639
Autor:
Machado, Rubens E. G., Laganá, Tatiana F., Souza, Gilvan S., Caproni, Anderson, Antas, Abraão S. R., Mello-Terencio, Elvis A.
Off-axis collisions between galaxy clusters may induce the phenomenon of sloshing, causing dense gas to be dragged from the cool core of a cluster, resulting in a spiral of enhanced X-ray emission. Abell 2199 displays signatures of sloshing in its co
Externí odkaz:
http://arxiv.org/abs/2206.14127
Autor:
Mazet, Laurent, Mendes, Abraão
In this paper we obtain two classification theorems for free boundary minimal hypersurfaces outside of the unit ball (exterior FBMH for short) in Euclidean space. The first result states that the only exterior stable FBMH with parallel embedded regul
Externí odkaz:
http://arxiv.org/abs/2206.08198