Results 41 to 50 of about 30,041 (97)

The scalar curvature problem on four-dimensional manifolds

open access: yesCommunications on Pure and Applied Analysis, 2020
We study the problem of existence of conformal metrics with prescribed scalar curvatures on a closed Riemannian \begin{document}$ 4 $\end{document} -manifold not conformally diffeomorphic to the standard sphere \begin{document}$ S^{4} $\end{document ...
H. Chtioui, H. Hajaiej, Marwa Soula
semanticscholar   +1 more source

Yamabe flow with prescribed scalar curvature [PDF]

open access: yesPacific Journal of Mathematics, 2017
In this work, we study the Yamabe flow corresponding to the prescribed scalar curvature problem on compact Riemannian manifolds with negative scalar curvature. The long time existence and convergence of the flow are proved under appropriate conditions on
Inas Amacha, R. Regbaoui
semanticscholar   +1 more source

Existence of Conformal Metrics on Spheres with Prescribed Paneitz Curvature

open access: yes, 2003
In this paper we study the problem of prescribing a fourth order conformal invariant (the Paneitz curvature) on the $n$-sphere, with $n\geq 5$. Using tools from the theory of critical points at infinity, we provide some topological conditions on the ...
Ayed, Mohamed Ben, Mehdi, Khalil El
core   +5 more sources

Prescribing the Scalar Curvature Problem on Three and Four Manifolds

open access: yesAdvanced Nonlinear Studies, 2003
Abstract This paper is devoted to the prescribed scalar curvature problem on 3 and 4- dimensional Riemannian manifolds. We give a new class of functionals which can be realized as scalar curvature. Our proof uses topological arguments and the tools of the theory of the critical points at infinity.
openaire   +2 more sources

Metrics with Prescribed Ricci Curvature on Homogeneous Spaces

open access: yes, 2016
Let $G$ be a compact connected Lie group and $H$ a closed subgroup of $G$. Suppose the homogeneous space $G/H$ is effective and has dimension 3 or higher. Consider a $G$-invariant, symmetric, positive-semidefinite, nonzero (0,2)-tensor field $T$ on $G/H$.
Pulemotov, Artem
core   +1 more source

The Cauchy problems for Einstein metrics and parallel spinors

open access: yes, 2013
We show that in the analytic category, given a Riemannian metric $g$ on a hypersurface $M\subset \Z$ and a symmetric tensor $W$ on $M$, the metric $g$ can be locally extended to a Riemannian Einstein metric on $Z$ with second fundamental form $W ...
A. Hermann   +36 more
core   +4 more sources

On the volume functional of compact manifolds with boundary with constant scalar curvature

open access: yes, 2008
We study the volume functional on the space of constant scalar curvature metrics with a prescribed boundary metric. We derive a sufficient and necessary condition for a metric to be a critical point, and show that the only domains in space forms, on ...
A.E. Fischer   +17 more
core   +1 more source

Prescribing Scalar Curvature on S3, S4 and Related Problems

open access: yesJournal of Functional Analysis, 1993
AbstractWe show that for the prescribing scalar curvature problem on Sn (n = 3, 4), we can perturb (in an explicit way) any given positive continuous function in any neighborhood of any given point on Sn such that for the perturbed function there exist many solutions.
openaire   +1 more source

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