Results 161 to 170 of about 74,207 (261)
Empty real Enriques surfaces and Enriques-Einstein-Hitchin 4-manifolds
, 1997 Alex Degtyarev, Viatcheslav Kharlamov
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Entropy maximizers for kinetic wave equations set on tori
Bulletin of the London Mathematical Society, EarlyView.Abstract We consider the kinetic wave equation, or phonon Boltzmann equation, set on the torus (physical system set on the lattice). We describe entropy maximizers for fixed mass and energy; our framework is very general, being valid in any dimension, for any dispersion relation, and even including the quantum kinetic wave equation.
Miguel Escobedo +3 more
wiley +1 more source
Rigidity of Einstein manifolds of nonpositive curvature
, 1997 Man Chun Leung
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Complex manifolds and Einstein’s equations
, 1982 We present a generalization of Penrose’s twistor theory based on the geometry of rational curves in complex manifolds. The analytical counterpart of this complex geometry consists, in the three simplest cases, of a system of differential equations closely connected with Einstein’s equations.
openaire +3 more sources
Bulletin of the London Mathematical Society, EarlyView.Abstract We study standing waves of the Schrödinger equation with constant magnetic field and combined power nonlinearities, which describes a single non‐relativistic quantum particle in the presence of an electromagnetic field. We develop the local minima geometry method to establish the existence, estimates and mass collapse results for this equation,
Zhaosheng Feng, Yu Su
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Data‐Driven Inverse Design of Spinodoid Architected Materials
GAMM-Mitteilungen, Volume 48, Issue 4, November 2025.Abstract We present a workflow for the inverse design of architected materials with targeted effective mechanical properties. The approach leverages a low‐dimensional descriptor space to represent the topology and morphology of complex mesostructures, enabling efficient navigation within the design space.
Alexandra Otto +3 more
wiley +1 more source
Heat Transfer, Volume 54, Issue 7, Page 4689-4707, November 2025.ABSTRACT The present work numerically investigates an Earth–Air Heat Exchanger (EAHE) of the vertical helical (VH) type, with regard to the prevailing climate and soil attributes of Rio Grande city, in southern Brazil, through the variation of its pitch between the helicoids (Ph), with constant air flow and soil conditions.
Andre Luis Razera +6 more
wiley +1 more source
Einstein Metrics Adapted to Contact Structures on 3-Manifolds
, 2000 Brendan Guilfoyle
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Journal of Geophysical Research: Planets, Volume 130, Issue 11, November 2025.Abstract We observed Io with the James Webb Space Telescope (JWST) NIRSpec/Integral Field Unit (1.0–5.3 μm, R∼2700 $R\sim 2700$) in August 2023 while the satellite was in eclipse. Thermal emission from Kanehekili Fluctus is consistent with the cooling of lava flows after a vigorous eruption in November 2022.
Imke de Pater +20 more
wiley +1 more source