Results 31 to 40 of about 3,150 (73)

Forward and Adjoint Calculations of Gravitational Potential in Heterogeneous, Aspherical Planets

open access: yesEarth and Space Science, Volume 13, Issue 5, May 2026.
Abstract We have developed a computational package for the calculation of numerically exact internal and external gravitational potential, its functional derivatives and sensitivity kernels, in an aspherical, heterogeneous planet. We detail our implementation, utilizing a transformation of the Poisson equation into a spherical reference domain, as well
Alex D. C. Myhill   +2 more
wiley   +1 more source

Postnikov extensions of ring spectra

open access: yes, 2006
We give a functorial construction of k-invariants for ring spectra and use these to classify extensions in the Postnikov tower of a ring spectrum.Comment: This is the version published by Algebraic & Geometric Topology on 1 November ...
Baues   +5 more
core   +2 more sources

A Fast Calculation Scheme for Microwave Gas Absorption and Atmospheric Transmittance With Coupled Physical Constraints Deep Learning Method

open access: yesEarth and Space Science, Volume 13, Issue 5, May 2026.
Abstract Accurate and efficient fast calculation of microwave atmospheric transmittance is the key to ensuring the accuracy of microwave radiative transfer simulations, and also an indispensable critical link in satellite microwave remote sensing and data assimilation.
H. Y. Huang   +5 more
wiley   +1 more source

Littlewood, Paley and almost‐orthogonality: a theory well ahead of its time

open access: yesJournal of the London Mathematical Society, Volume 113, Issue 5, May 2026.
Abstract The classic paper by Littlewood and Paley [J. Lond. Math. Soc. (1), 6 (1931), 230–233] marked the birth of Littlewood–Paley theory. We discuss this paper and its impact from a historical perspective, include an outline of the results in the paper and their subsequent significance in relation to developments over the last century, and set them ...
Anthony Carbery
wiley   +1 more source

Global weak solutions for the compressible Poisson–Nernst–Planck–Navier–Stokes system

open access: yesJournal of the London Mathematical Society, Volume 113, Issue 5, May 2026.
Abstract We consider the compressible Poisson–Nernst–Planck–Navier–Stokes (PNPNS) system of equations, governing the transport of charged particles under the influence of the self‐consistent electrostatic potential, in a three‐dimensional bounded domain.
Daniel Marroquin, Dehua Wang
wiley   +1 more source

On the homotopy theory of stratified spaces

open access: yes, 2019
Let $ P $ be a poset. We show that the $\infty$-category $\mathbf{Str}_P$ of $\infty$-categories with a conservative functor to $P$ can be obtained from the ordinary category of $P$-stratified topological spaces by inverting a class of weak equivalences.
Haine, Peter J.
core  

Isoperimetric inequalities on slabs with applications to cubes and Gaussian slabs

open access: yesCommunications 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

Supersymmetry and Homotopy

open access: yes, 2000
The homotopical information hidden in a supersymmetric structure is revealed by considering deformations of a configuration manifold. This is in sharp contrast to the usual standpoints such as Connes' programme where a geometrical structure is rigidly ...
Maumary, Serge, Ojima, Izumi
core   +1 more source

Optimal decay estimates for the general solution to a class of semi-linear dissipative hyperbolic equations [PDF]

open access: yes, 2013
We consider a class of semi-linear dissipative hyperbolic equations in which the operator associated to the linear part has a nontrivial kernel.
Ghisi, Marina   +2 more
core   +2 more sources

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