Results 71 to 80 of about 587 (217)
Computer-Aided Civil and Infrastructure Engineering, Volume 40, Issue 17, Page 2434-2463, 14 July 2025.Abstract The rise of exascale supercomputing has motivated an increase in high‐fidelity computational fluid dynamics (CFD) simulations. The detail in these simulations, often involving shape‐dependent, time‐variant flow domains and low‐speed, complex, turbulent flows, is essential for fueling innovations in fields like wind, civil, automotive, or ...
Omar A. Mures, Miguel Cid Montoya
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ζ-Conformally Flat LP-Kenmotsu Manifolds and Ricci–Yamabe Solitons
Mathematics, 2022 In the present paper, we characterize m-dimensional ζ-conformally flat LP-Kenmotsu manifolds (briefly, (LPK)m) equipped with the Ricci–Yamabe solitons (RYS) and gradient Ricci–Yamabe solitons (GRYS).
Abdul Haseeb +3 more
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On the C k-embedding of Lorentzian manifolds in Ricci-flat spaces [PDF]
Journal of Mathematical Physics, 2018 In this paper, we investigate the problem of non-analytic embeddings of Lorentzian manifolds in Ricci-flat semi-Riemannian spaces. In order to do this, we first review some relevant results in the area and then motivate both the mathematical and physical interests in this problem. We show that any n-dimensional compact Lorentzian manifold (Mn, g), with
Carlos Romero, R. Avalos, F. Dahia
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The Impact of Quasi-Conformal Curvature Tensor on Warped Product Manifolds
AxiomsThis work investigates the effects on the factor manifolds of a singly warped product manifold resulting from the presence of a quasi-conformally flat, quasi-conformally symmetric, or divergence-free quasi-conformal curvature tensor.
Bang-Yen Chen +4 more
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Pseudo-Reimannian manifolds endowed with an almost para f-structure
International Journal of Mathematics and Mathematical Sciences, 1985 Let M˜(U,Ω˜,η˜,ξ,g˜) be a pseudo-Riemannian manifold of signature (n+1,n). One defines on M˜ an almost cosymplectic para f-structure and proves that a manifold M˜ endowed with such a structure is ξ-Ricci flat and is foliated by minimal hypersurfaces ...
Vladislav V. Goldberg, Radu Rosca
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Ricci-flat deformations of asymptotically cylindrical Calabi--Yau manifolds
, 2006 We study a class of asymptotically cylindrical Ricci-flat K hler metrics arising on quasiprojective manifolds. Using the Calabi--Yau geometry and analysis and the Kodaira--Kuranishi--Spencer theory and building up on results of N.Koiso for the case of compact manifolds, we show that under rather general hypotheses any `small' asymptotically ...
Alexei Kovalev
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A Kummer construction for Chern–Ricci flat balanced manifolds
Mathematische ZeitschriftAbstractGiven a non-Kähler Calabi–Yau compact orbifold with isolated singularities endowed with a Chern–Ricci flat balanced metric, we study, via a gluing construction, the existence of Chern–Ricci flat balanced metrics on its crepant resolutions, and discuss applications to the search of solutions for the Hull–Strominger system.
Giusti, Federico, Spotti, Cristiano
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On totally umbilical and minimal surfaces of the Lorentzian Heisenberg groups
Mathematische Nachrichten, Volume 298, Issue 6, Page 1922-1942, June 2025.Abstract This paper has manifold purposes. We first introduce a description of the Gauss map for submanifolds (both spacelike and timelike) of a Lorentzian ambient space and relate the conformality of the Gauss map of a surface to total umbilicity and minimality.
Giovanni Calvaruso +2 more
wiley +1 more source
TWO-BODY PROBLEM IN KALUZA-KLEIN MODELS WITH RICCI-FLAT INTERNAL SPACES
Odessa Astronomical Publications, 2013 We consider the dynamics of a two-body system in the model with additional spatial dimensions compactified on a Ricci-flat manifold. To define the gravitational field of a system and to construct its Lagrange function we use the weak-field approach.
Alexey Chopovsky
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Critical lumpy black holes in AdSp×Sq
Journal of High Energy Physics, 2021 In this paper we study lumpy black holes with AdSp × S q asymptotics, where the isometry group coming from the sphere factor is broken down to SO(q).
Biel Cardona, Pau Figueras
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