Results 81 to 90 of about 3,518 (112)
Global generation of the direct images of relative pluricanonical systems [PDF]
arXiv, 2010 We prove global generation of the direct images of relative pluricanonical systems of sufficiently large and divisible multiples over the complement of the discriminant locus.
arxiv
Ricci solitons on Sasakian manifolds [PDF]
arXiv, 2011 We show that a Sasakian metric which also satisfies the gradient Ricci soliton equation is necessarily Einstein.
arxiv
Results in Physics, 2021 Static perfect fluid spaces are of great interest in metric theories of gravitation, they being used in building realistic models of some compact objects, like neutron stars and white dwarfs.
Sharief Deshmukh +2 more
doaj
Contact metric manifolds with large automorphism group and (κ, µ)-spaces
Complex Manifolds, 2019 We discuss the classifiation of simply connected, complete (κ, µ)-spaces from the point of view of homogeneous spaces. In particular, we exhibit new models of (κ, µ)-spaces having Boeckx invariant -1.
Lotta Antonio
doaj +1 more source
A class of 3-dimensional contact metric manifolds [PDF]
arXiv, 2012 We classify the contact metric 3-manifolds that satisfy ||grad{\lambda}||=1 and \nabla_{{\xi}}{\tau}=2a{\tau}{\phi}.
arxiv
Open MathematicsThis article investigates the geometric and topologic of warped product submanifolds in Riemannian warped product Qεm×R{{\mathbb{Q}}}_{\varepsilon }^{m}\times {\mathbb{R}}.
Li Yanlin, Alshehri Norah, Ali Akram
doaj +1 more source
Nearly Sasakian manifolds revisited
Complex Manifolds, 2019 We provide a new, self-contained and more conceptual proof of the result that an almost contact metric manifold of dimension greater than 5 is Sasakian if and only if it is nearly Sasakian.
Cappelletti-Montano Beniamino +3 more
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The prescribed scalar curvature problem for metrics with unit total volume [PDF]
arXiv, 2014 We solve the modified Kazdan-Warner problem of finding metrics with prescribed scalar curvature and unit total volume.
arxiv
Compact 4-manifolds with harmonic Weyl tensor and nonnegative biorthogonal curvature [PDF]
arXiv, 2015 In this note we classify compact 4-manifolds with harmonic Weyl tensor and nonnegative biorthogonal ...
arxiv
An Inequality on Quaternionic CR-Submanifolds
Analele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2018 We establish an inequality for an intrinsic invariant of Chen-type defined on quaternionic CR-submanifolds in quaternionic space forms, in terms of the squared mean curvature, the main extrinsic invariant, by using the method of constrained extrema.
Macsim Gabriel, Mihai Adela
doaj +1 more source