Results 91 to 100 of about 581 (202)
Kummer-type constructions of almost Ricci-flat 5-manifolds
Annals of Global Analysis and Geometry, 2023 A smooth closed manifold $M$ is called almost Ricci-flat if $$\inf_g||\textrm{Ric}_g||_\infty\cdot \textrm{diam}_g(M)^2=0$$ where $\textrm{Ric}_g$ and $\textrm{diam}_g$ denote the Ricci tensor and the diameter of $g$ respectively and $g$ runs over all Riemannian metrics on $M$.
openaire +3 more sources
The Concise Guide to PHARMACOLOGY 2025/26: G protein‐coupled receptors
British Journal of Pharmacology, Volume 182, Issue S1, Page S24-S151, December 2025.The Concise Guide to Pharmacology 2025/26 marks the seventh edition in this series of biennial publications in the British Journal of Pharmacology. Presented in landscape format, the guide provides a comparative overview of the pharmacology of drug target families. The concise nature of the Concise Guide refers to the style of presentation, being clear,
Stephen P. H. Alexander +206 more
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Symbolic approximations to Ricci-flat metrics via extrinsic symmetries of Calabi–Yau hypersurfaces
Machine Learning: Science and TechnologyEver since Yau’s non-constructive existence proof of Ricci-flat metrics on Calabi–Yau (CY) manifolds, finding their explicit construction remains a major obstacle to development of both string theory and algebraic geometry.
Viktor Mirjanić, Challenger Mishra
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On quasirecurrent manifolds [PDF]
Mathematica BohemicaWe introduce a type of Riemannian manifolds (namely, quasirecurrent manifold) and study its several geometric properties. Among others, we prove that the scalar curvature of such a manifold is constant, and that the manifold is Einstein under certain ...
Jaeman Kim
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On LP-Kenmotsu Manifold with Regard to Generalized Symmetric Metric Connection of Type (α, β)
MathematicsIn the current article, we examine Lorentzian para-Kenmotsu (shortly, LP-Kenmotsu) manifolds with regard to the generalized symmetric metric connection ∇G of type (α,β).
Doddabhadrappla Gowda Prakasha +3 more
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An attempt to geometrize electromagnetism
Open Physics, 2018 This study investigates the curved worldline of a charged particle accelerated by an electromagnetic field in flat spacetime. A new metric, which dependes on the charge-to-mass ratio and electromagnetic potential, is proposed to describe the curve ...
Huang XiuLin, Xu Yan, Liu ChengZhi
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Journal of High Energy Physics, 2019 We study the perturbative unitarity of scattering amplitudes in general dimensional reductions of Yang-Mills theories and general relativity on closed internal manifolds.
James Bonifacio, Kurt Hinterbichler
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Advances in High Energy Physics, 2013 We consider a multidimensional Kaluza-Klein (KK) model with a Ricci-flat internal space, for example, a Calabi-Yau manifold. We perturb this background metrics by a system of gravitating masses, for example, astrophysical objects such as our Sun.
Alexey Chopovsky +2 more
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Some rigidity results for noncompact gradient steady Ricci solitons and Ricci-flat manifolds [PDF]
, 2013 Fei He
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Gravitational Solitons and Complete Ricci Flat Riemannian Manifolds of Infinite Topological Type [PDF]
, 2022 Marcus Khuri +3 more
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