Results 161 to 170 of about 169,909 (330)
Mean Curvature Flow of Surfaces in Einstein Four-Manifolds [PDF]
, 2001 Mu‐Tao Wang
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Hidden Symmetries of Euclideanised Kerr-NUT-(A)dS Metrics in Certain Scaling Limits
Symmetry, Integrability and Geometry: Methods and Applications, 2012 The hidden symmetries of higher dimensional Kerr-NUT-(A)dS metrics are investigated. In certain scaling limits these metrics are related to the Einstein-Sasaki ones.
Mihai Visinescu, Eduard Vîlcu
doaj +1 more source
The simplicity of physical laws
Noûs, EarlyView.Abstract Physical laws are strikingly simple, yet there is no a priori reason for them to be so. I propose that nomic realists—Humeans and non‐Humeans—should recognize simplicity as a fundamental epistemic guide for discovering and evaluating candidate physical laws.
Eddy Keming Chen
wiley +1 more source
On mixed super quasi-Einstein manifolds with Ricci-Bourguignon solitons [PDF]
arXivThis paper delves into the study of mixed super quasi-Einstein manifolds of dimension $n$ (for short, ${\rm M^{n}_{SQE}}$), focusing on their geometric and physical attributes. Initially, we explore several properties of ${\rm M^{n}_{SQE}}$, including conformal Ricci pseudosymmetry, Einstein's field equation, and the space-matter tensor.
arxiv
Solutions of the Einstein–Dirac equation on Riemannian 3-manifolds with constant scalar curvature [PDF]
, 2000 Thomas Friedrich
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The η-Einstein condition on indefinite S-manifolds
Mathematica Slovaca, 2014 Abstract An η-Einstein condition is introduced in the context of indefinite globally framed f-manifolds, and several Schur-type results for indefinite S-manifolds are proved.
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A comparison of Hochschild homology in algebraic and smooth settings
Bulletin of the London Mathematical Society, EarlyView.Abstract Consider a complex affine variety V∼$\tilde{V}$ and a real analytic Zariski‐dense submanifold V$V$ of V∼$\tilde{V}$. We compare modules over the ring O(V∼)$\mathcal {O} (\tilde{V})$ of regular functions on V∼$\tilde{V}$ with modules over the ring C∞(V)$C^\infty (V)$ of smooth complex valued functions on V$V$.
David Kazhdan, Maarten Solleveld
wiley +1 more source
Asymptotic behavior of Moncrief Lines in constant curvature space‐times
Bulletin of the London Mathematical Society, EarlyView.Abstract We study the asymptotic behavior of Moncrief lines on 2+1$2+1$ maximal globally hyperbolic spatially compact space‐time M$M$ of nonnegative constant curvature. We show that when the unique geodesic lamination associated with M$M$ is either maximal uniquely ergodic or simplicial, the Moncrief line converges, as time goes to zero, to a unique ...
Mehdi Belraouti +2 more
wiley +1 more source
Magnetic Resonance in Medicine, Volume 93, Issue 5, Page 2020-2028, May 2025.Abstract Purpose To characterize the diffusion time (Δeff) dependence of apparent diffusion coefficient (ADC) and intravoxel incoherent motion–related parameters in the human kidney at 3 T. Methods Sixteen healthy volunteers underwent an MRI examination at 3 T including diffusion‐weighted imaging at different Δeff ranging from 24.1 to 104.1 ms.
Julia Stabinska +5 more
wiley +1 more source