2 citations · 6 across the 9 of their papers we have counts for
12 papers · 1 filter
Rigity results on -Einstein solitons with zero scalar curvature
Romildo Pina, Ilton Menezes, Lucyjane Silva
In this paper we show that a -Einstein solitons conformal to a pseudo-Euclidean space, invariant under the action of the pseudo-orthogonal group with zero scalar curvature is st…
On the construction of complete expanding gradient Rici solitons
Marcio de Sousa, Paula Bonfim, Romildo Pina +1
We study gradient Ricci solitons warped products whose base is the Euclidean space. We show that the warping functions of these manifolds are invariant under the (n-1)-dimensional…
Einstein hypersurfaces of and
Benedito Leandro, Romildo Pina, João Paulo dos Santos
In this paper, we classify the Einstein hypersurfaces of and . We use the characterization of the hypersurfaces of…
An analysis of symmetry groups of generalized -quasi-Einstein manifolds
Paula Correia, Benedito Leandro, Romildo Pina
In this paper emphasis is placed on how the behavior of the solutions of a PDE is affected by the geometry of the generalized -quasi-Einstein manifold, and vice versa. Consideri…
Quasi-Einstein manifolds with structure of warped product product
Paula Gonçalves Correia Bonfim, Romildo Pina
In this paper we prove that under certain conditions in a quasi Einstein semi Riemannian warped product the fiber is necessarily a Einstein manifold. We provide all the quasi Einst…
Gradient Estimates on Warped Product Gradient Almost Ricci Solitons
Willian Isao Tokura, Levi Adriano, Romildo Pina +1
In this paper, by slightly modifying Li-Yau's technique so that we can handle drifting Laplacians, we were able to find three different gradient estimates for the warping function,…