Results 251 to 260 of about 33,778 (318)

On the isoperimetric Riemannian Penrose inequality

Communications on Pure and Applied Mathematics, Volume 78, Issue 5, Page 1042-1085, May 2025.
Abstract We prove that the Riemannian Penrose inequality holds for asymptotically flat 3‐manifolds with nonnegative scalar curvature and connected horizon boundary, provided the optimal decay assumptions are met, which result in the ADM$\operatorname{ADM}$ mass being a well‐defined geometric invariant.
Luca Benatti, Mattia Fogagnolo, Lorenzo Mazzieri   +2 more
wiley   +1 more source

The geometry of discrete asymptotic-geodesic 4-webs in isotropic 3-space. [PDF]

Mon Hefte Math
Müller C, Pottmann H.
europepmc   +1 more source

A Morse theory for geodesics on a Lorentz manifold

, 1975
Karen Uhlenbeck
openalex   +1 more source

A road map to manual segmentation of cerebral structures

Journal of Anatomy, Volume 246, Issue 5, Page 819-828, May 2025.
Manual segmentation is an essential tool and critical task in neuroimaging and comparative brain anatomy. We propose a general roadmap for optimizing the technique and its reporting illustrated by a checklist that readers can use to follow critical steps. Abstract Manual segmentation is an essential tool in the researcher's technical arsenal.
Fanny Darrault, Guillaume Dannhoff, Maëlig Chauvel, Théo Delmaire, Simon Louchez, Cyril Poupon, Ivy Uszynski, Christophe Destrieux, Igor Lima Maldonado, Frédéric Andersson   +9 more
wiley   +1 more source

Geodesic Convexity of the Symmetric Eigenvalue Problem and Convergence of Steepest Descent. [PDF]

J Optim Theory Appl
Alimisis F, Vandereycken B.
europepmc   +1 more source

Ionospheric Disturbances in GNSS TEC Data: SpaceX Falcon 9 Deorbit Maneuvers Over CONUS in April–May 2024

Geophysical Research Letters, Volume 52, Issue 8, 28 April 2025.
Abstract Traveling ionospheric disturbances (TIDs) driven by a large number of internal and external sources are detectable with dense networks of ground‐based Global Navigation Satellite System (GNSS) receivers' measurements of total electron content (TEC).
P. A. Inchin, K. B. Deshpande, S. Egan, E. H. Lay, K. S. Obenberger, M. D. Zettergren, J. B. Snively   +6 more
wiley   +1 more source

A Complex Structure for Two-Typed Tangent Spaces. [PDF]

Entropy (Basel)
Naudts J.
europepmc   +1 more source

Equivariant Morse theory and closed geodesics [PDF]

, 1984
Nancy Hingston
openalex   +1 more source

Conformal geodesics [PDF]

Transactions of the American Mathematical Society, 1939
openaire   +1 more source

Two‐Day Wave Modulation of Gravity Wave Momentum Fluxes Observed Over South America

Journal of Geophysical Research: Atmospheres, Volume 130, Issue 8, 28 April 2025.
Abstract Planetary wave (PW) modulation of gravity wave (GW) dissipation has long been proposed as a source of longitudinal variability in the mesosphere and lower thermosphere. However, direct measurements of GW drag are rare. We identify 2‐day wave variations in GW momentum fluxes measured by the Southern Argentina Agile Meteor Radar (SAAMER) in Rio ...
Ruth S. Lieberman, Gunter Stober, Erich Becker, Diego Janches, Jun Ma, Alan Liu   +5 more
wiley   +1 more source