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Related papers: Compact quasi-Einstein manifolds with boundary

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In this paper, we study the structure of the limit space of a sequence of almost Einstein manifolds, which are generalizations of Einstein manifolds. Roughly speaking, such manifolds are the initial manifolds of some normalized Ricci flows…

Differential Geometry · Mathematics 2012-02-15 Gang Tian , Bing Wang

In this paper, we classify $n$-dimensional ($n\geq 5$) quasi-Einstein manifolds with harmonic Weyl curvature, thus extending the work of Shin \cite{Shin} in dimension four for quasi-Einstein manifolds and refining the work of…

Differential Geometry · Mathematics 2025-12-01 Huai-Dong Cao , Fengjiang Li , James Siene

We show the existence of a convex compact domain in a quasi-Fuchsian manifold such that the induced metric on its boundary coincides with a prescribed surface metric of curvature $K\geq-1$ in the sense of A. D. Alexandrov.

Metric Geometry · Mathematics 2014-05-08 Dmitriy Slutskiy

We investigate the topology of the compact hypersurfaces in round spheres whose Ricci curvature satisfies an appropriate bound that only depends on the mean curvature of the submanifold. In this paper, the use of the Bochner technique…

Differential Geometry · Mathematics 2024-03-20 Marcos Dajczer , Miguel I. Jimenez , Theodoros Vlachos

In this note we adapt the work of Hall to find quasi-Einstein metrics on sphere bundles over products of Fano Kaehler-Einstein manifolds, as well as bundles where only one end is blown down.

Differential Geometry · Mathematics 2022-12-21 Solomon Huang , Tommy Murphy , Thanh Nhan Phan

We define a mass-type invariant for asymptotically hyperbolic manifolds with a noncompact boundary which are modelled at infinity on the hyperbolic half-space and prove a sharp positive mass inequality in the spin case under suitable…

Differential Geometry · Mathematics 2019-01-04 Sergio Almaraz , Levi Lopes de Lima

We produce some explicit examples of conformally compact Einstein manifolds, whose conformal compactifications are foliated by Riemannian products of a closed Einstein manifold with the total space of a principal circle bundle over products…

Differential Geometry · Mathematics 2009-10-27 Dezhong Chen

As demonstrated by Croke and Kleiner, the visual boundary of a CAT(0) group is not well-defined since quasi-isometric CAT(0) spaces can have non-homeomorphic boundaries. We introduce a new type of boundary for a CAT(0) space, called the…

Geometric Topology · Mathematics 2017-04-04 Ruth Charney , Harold Sultan

The main purpose of the present paper is to define and study the notion of quasi bi-slant submanifolds of almost contact metric manifolds. We mainly concerned with quasi bi-slant submanifolds of cosymplectic manifolds as a generalization of…

General Mathematics · Mathematics 2020-03-10 Mehmet Akif Akyol , Selahattin Beyendi

The goal of this paper is to investigate some rigidity properties of stable solutions of elliptic equations set on manifolds with boundary. We provide several types of results, according to the dimension of the manifold and the sign of its…

Analysis of PDEs · Mathematics 2009-07-16 Yannick Sire , Enrico Valdinoci

This work proves certain general orbifold compactness results for spaces of Riemannian metrics, generalizing earlier results along these lines for Einstein metrics or metrics with bounded Ricci curvature. This is then applied to prove such…

Differential Geometry · Mathematics 2007-05-23 Michael T. Anderson

We show that the boundary of a projectively compact Einstein manifold of dimension $n$ can be extended by a line bundle naturally constructed from the projective compactification. This extended boundary is such that its automorphisms can be…

Differential Geometry · Mathematics 2024-01-26 Jack Borthwick , Yannick Herfray

We continue our study of ends of non-compact manifolds, with a focus on the inward tameness condition. For manifolds with compact boundary, inward tameness, has significant implications. For example, such manifolds have stable homology at…

Geometric Topology · Mathematics 2017-04-19 Craig R. Guilbault , Frederick C. Tinsley

In this paper, we establish an equivariant version of Dai-Zhang's Toeplitz index theorem for compact odd-dimensional spin manifolds with even-dimensional boundary.

Differential Geometry · Mathematics 2022-08-16 Johnny Lim , Hang Wang

We study the rigidity of compact submanifolds of Riemannian manifolds of arbitrary codimension that satisfy a sharp pinching condition involving the norm of the second fundamental form and the mean curvature. Without assuming that the…

Differential Geometry · Mathematics 2026-03-25 Theodoros Vlachos

We prove local Strichartz estimates on compact manifolds with boundary. Our results also apply more generally to compact manifolds with Lipschitz metrics.

Analysis of PDEs · Mathematics 2007-05-23 Matthew D. Blair , Hart F. Smith , Christopher D. Sogge

In the article we introduce new conformal and smooth invariants on compact, oriented four-manifolds with boundary. In the first part, we show that "positivity" conditions on these invariants will impose topological restrictions on…

Differential Geometry · Mathematics 2020-09-14 Siyi Zhang

We study sequences of oriented Riemannian manifolds with boundary and, more generally, integral current spaces and metric spaces with boundary. {\color{blue}For a metric space, we define its boundary to be the completion of the space minus…

Metric Geometry · Mathematics 2021-08-18 Raquel Perales

We study the space of Riemannian metrics with positive scalar curvature on a compact manifold with boundary. These metrics extend a fixed boundary metric and take a product structure on a collar neighbourhood of the boundary. We show that…

Differential Geometry · Mathematics 2019-09-09 Mark Walsh

Quasi-Einstein manifolds are well-studied generalizations of Einstein manifolds. This includes gradient Ricci solitons and has a natural correspondence with the warped product Einstein manifolds. A quasi-Einstein metric is said to be rigid…

Differential Geometry · Mathematics 2026-04-24 Atreyee Bhattacharya , Sayoojya Prakash