Results 41 to 50 of about 19,618 (150)
Fermat Principle in Finsler Spacetimes
, 2005 It is shown that, on a manifold with a Finsler metric of Lorentzian signature, the lightlike geodesics satisfy the following variational principle. Among all lightlike curves from a point (emission event) to a timelike curve (worldline of receiver), the ...
A.G. Voronovich +20 more
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Degree theory for 4‐dimensional asymptotically conical gradient expanding solitons
Communications on Pure and Applied Mathematics, Volume 79, Issue 5, Page 1151-1298, May 2026.Abstract We develop a new degree theory for 4‐dimensional, asymptotically conical gradient expanding solitons. Our theory implies the existence of gradient expanding solitons that are asymptotic to any given cone over S3$S^3$ with non‐negative scalar curvature. We also obtain a similar existence result for cones whose link is diffeomorphic to S3/Γ$S^3/\
Richard H. Bamler, Eric Chen
wiley +1 more source
Simple closed geodesics and the study of Teichm\"uller spaces [PDF]
, 2009 The goal of the chapter is to present certain aspects of the relationship between the study of simple closed geodesics and Teichm\"uller spaces.Comment: to appear in Handbook of Teichm\"uller theory, vol ...
Parlier, Hugo
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Isoperimetric inequalities on slabs with applications to cubes and Gaussian slabs
Communications on Pure and Applied Mathematics, Volume 79, Issue 4, Page 1012-1072, April 2026.Abstract We study isoperimetric inequalities on “slabs”, namely weighted Riemannian manifolds obtained as the product of the uniform measure on a finite length interval with a codimension‐one base. As our two main applications, we consider the case when the base is the flat torus R2/2Z2$\mathbb {R}^2 / 2 \mathbb {Z}^2$ and the standard Gaussian measure
Emanuel Milman
wiley +1 more source
Geometric approach to Hamiltonian dynamics and statistical mechanics
, 1999 This paper is a review of results which have been recently obtained by applying mathematical concepts drawn, in particular, from differential geometry and topology, to the physics of Hamiltonian dynamical systems with many degrees of freedom of interest ...
Casetti, Lapo +2 more
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Rates of Sea‐Level Rise Are Highly Sensitive to Ice Viscosity Parameters in Model Benchmarks
AGU Advances, Volume 7, Issue 2, April 2026.Abstract Glacier flow plays a major role in current and future rates of globally averaged sea‐level rise. The viscosity of glacial ice, controlling the rate of flow, decreases as stress increases and is highly sensitive to the value of the stress exponent, n $n$, in the constitutive equation for viscous flow.
D. F. Martin +5 more
wiley +1 more source
Archaeometry, Volume 68, Issue 2, Page 173-183, April 2026.ABSTRACT This study examines plot divisions and units of measurement in regular medieval new towns in Central Europe, with a particular focus on historical Silesia. By applying the cosine quantogram method alongside GIS‐referenced cartographic sources and modular analysis, the research reconstructs the spatial organization of urban layouts. The results
Maria Legut‐Pintal +3 more
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Exceptionally Elongated Strike‐Slip Rupture Caused by the 2025 MW 7.8 Myanmar Earthquake
Geophysical Research Letters, Volume 53, Issue 6, 28 March 2026.Abstract The interplay between fault geometry and rupture behavior remains poorly understood. The 2025 Myanmar earthquake ruptured the Sagaing fault, a major continental strike‐slip fault with simple geometry. We integrated geodetic and teleseismic observations to investigate its rupture process through finite‐fault kinematic inversions and back ...
Quanshu Zhao +7 more
wiley +1 more source
Geophysical Research Letters, Volume 53, Issue 5, 16 March 2026.Abstract As global climate change intensifies, hurricane‐induced storm surges are becoming more frequent and severe. While Global Navigation Satellite System‐Interferometric Reflectometry (GNSS‐IR) is widely used to monitor sea level variations, its capability to detect rapid and extreme events remains limited.
Xin Chang +8 more
wiley +1 more source
The isometries of the space of K\"ahler metrics
, 2019 Given a compact K\"ahler manifold, we prove that all global isometries of the space of K\"ahler metrics are induced by biholomorphisms and anti-biholomorphisms of the manifold.
Darvas, Tamás
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