Results 21 to 30 of about 693,970 (340)

Quantitative K-theory, positive scalar curvature, and band width [PDF]

open access: yes, 2020
We develop two connections between the quantitative framework of operator $K$-theory for geometric $C^*$-algebras and the problem of positive scalar curvature.
Haoyang Guo, Zhizhang Xie, Guoliang Yu
semanticscholar   +1 more source

Horizon curvature and spacetime structure influences on black hole scalarization

open access: yesEuropean Physical Journal C: Particles and Fields, 2021
Black hole spontaneous scalarization has been attracting more and more attention as it circumvents the well-known no-hair theorems. In this work, we study the scalarization in Einstein–scalar-Gauss–Bonnet theory with a probe scalar field in a black hole ...
Hong Guo   +3 more
doaj   +1 more source

On the constant scalar curvature Kähler metrics (II)—Existence results

open access: yesJournal of The American Mathematical Society, 2020
In this paper, we apply our previous estimates in Chen and Cheng [On the constant scalar curvature Kähler metrics (I): a priori estimates, Preprint] to study the existence of cscK metrics on compact Kähler manifolds. First we prove that the properness of
Xiuxiong Chen, Jingrui Cheng
semanticscholar   +1 more source

Index theory for scalar curvature on manifolds with boundary [PDF]

open access: yes, 2020
We extend results of Llarull and Goette-Semmelmann to manifolds with boundary.
J. Lott
semanticscholar   +1 more source

Scalar curvature and harmonic maps to $S^1$ [PDF]

open access: yesJournal of differential geometry, 2019
For a harmonic map $u:M^3\to S^1$ on a closed, oriented $3$--manifold, we establish the identity $$2\pi \int_{\theta\in S^1}\chi(\Sigma_{\theta})\geq \frac{1}{2}\int_{\theta\in S^1}\int_{\Sigma_{\theta}}(|du|^{-2}|Hess(u)|^2+R_M)$$ relating the scalar ...
Daniel Stern
semanticscholar   +1 more source

On the scalar curvature and sectional curvatures of a Kaehler submanifold [PDF]

open access: yesProceedings of the American Mathematical Society, 1973
For a Kaehler submanifold of a complex space form, pinching for scalar curvature implies pinching for sectional curvatures. 1 . Statement of result. The scalar curvature is, by definition, the sum of Ricci curvatures with respect to an orthonormal basis of the tangent space, and the Ricci curvature is the sum of sectional curvatures.
Chen, Bang-Yen, Ogiue, Koichi
openaire   +1 more source

ON THE FLAG CURVATURE OF FINSLER METRICS OF SCALAR CURVATURE [PDF]

open access: yesJournal of the London Mathematical Society, 2003
23 ...
Chen, Xinyue   +2 more
openaire   +2 more sources

Positive scalar curvature and minimal hypersurface singularities [PDF]

open access: yesSurveys in Differential Geometry, 2017
In this paper we develop methods to extend the minimal hypersurface approach to positive scalar curvature problems to all dimensions. This includes a proof of the positive mass theorem in all dimensions without a spin assumption.
R. Schoen, S. Yau
semanticscholar   +1 more source

On the scalar curvature of Einstein manifolds [PDF]

open access: yesMathematical Research Letters, 1997
LaTeX.
Catanese, Fabrizio, LeBrun, Claude
openaire   +3 more sources

Compactness and blow up results for doubly perturbed Yamabe problems on manifolds with non umbilic boundary

open access: yesElectronic Research Archive, 2022
We study the stability of compactness of solutions for the Yamabe boundary problem on a compact Riemannian manifold with non umbilic boundary. We prove that the set of solutions of Yamabe boundary problem is a compact set when perturbing the mean ...
Marco G. Ghimenti   +1 more
doaj   +1 more source

Home - About - Disclaimer - Privacy