Results 201 to 210 of about 1,726,318 (276)

Selector form of Weaver's conjecture and frame sparsification

open access: yesProceedings of the London Mathematical Society, Volume 133, Issue 5, November 2026.
Abstract We show an extension of a probabilistic result of Marcus, Spielman, and Srivastava, which resolved the Kadison–Singer problem, to block diagonal positive semidefinite random matrices. We use this result to show several selector results, which generalize their partition counterparts.
Marcin Bownik
wiley   +1 more source

Fast eikonal phase retrieval for high-throughput beamlines. [PDF]

open access: yesJ Synchrotron Radiat
Mirone A   +5 more
europepmc   +1 more source

Discrete homotopy hypothesis for n$n$‐types

open access: yesProceedings of the London Mathematical Society, Volume 133, Issue 5, November 2026.
Abstract We show that discrete and classical homotopy theories are equivalent after localizing at n$n$‐equivalences for any non‐negative integer n$n$. By constructing an explicit homotopy inverse to the graph nerve functor associating an n$n$‐fibrant cubical set to a graph, we are also able to give explicit computations of several previously unknown ...
Daniel Carranza, Krzysztof Kapulkin
wiley   +1 more source

Potential Benefits of Assimilating Phased Array Radar Data for Convective‐Scale Analysis and Prediction of Supercell Storms: A Proof‐of‐Concept OSSE Study

open access: yesGeophysical Research Letters, Volume 53, Issue 20, 28 October 2026.
Abstract This study investigates the impact of phased array radar (PAR) scanning strategies on short‐term convective‐scale analyses and forecasts through an Observing System Simulation Experiment framework. The Weather Research and Forecasting model, coupled with the Data Assimilation Research Testbed ensemble adjustment Kalman filter, is used to ...
Jidong Gao, Derek R. Stratman
wiley   +1 more source

Neural Adjoint Inverse Design of Three‐Dimensional Nanophotonic Devices

open access: yesNanophotonics, Volume 15, Issue 20, 27 October 2026.
A stage‐wise Fourier neural operator is trained on FDTD adjoint gradients of volumetric meta‐optics, each stage refining residuals under progressively enlarged Fourier‐mode cutoffs. Given any permittivity volume, the model reconstructs the 3D gradient field, from coarse envelope to resonance peaks, within a second, driving inverse design to 86–99% of ...
Chanik Kang   +3 more
wiley   +1 more source

A Practical Guide to First‐Principles Calculations for Pseudocapacitive Materials: From Electrochemical Experiments to Atomistic Understanding

open access: yesChemElectroChem, Volume 13, Issue 20, 16 October 2026.
Electrochemical experiments reveal what happens, whereas first principles calculations explain why. Emerging computational electrochemistry is bridging these perspectives, enabling quantitative understanding of electrode/electrolyte interfaces and enabling the rational design of next‐generation energy storage materials.
Kenji Oqmhula, Ryo Maezono, Kenta Hongo
wiley   +1 more source

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