Results 71 to 80 of about 94,492 (313)

Generative Lagrangian data assimilation for ocean dynamics under extreme sparsity

Machine Learning. Earth
Reconstructing ocean dynamics from observational data is fundamentally limited by the sparse, irregular, and Lagrangian nature of spatial sampling, particularly in subsurface and remote regions.
Niloofar Asefi, Leonard Lupin-Jimenez, Tianning Wu, Ruoying He, Ashesh Chattopadhyay   +4 more
doaj   +1 more source

Regular Lagrangians are smooth Lagrangians

Journal of the Mathematical Society of Japan
We prove that for any element in the $γ$-completion of the space of smooth compact exact Lagrangian submanifolds of a cotangent bundle, if its $γ$-support is a smooth Lagrangian submanifold, then the element itself is a smooth Lagrangian. We also prove that if the $γ$-support of an element in the completion is compact, then it is connected.
Asano, Tomohiro, Guillermou, Stéphane, Ike, Yuichi, Viterbo, Claude   +3 more
openaire   +2 more sources

A Lagrangian Approach to Transport of Momentum and Biomass in Aquatic Biological Systems [PDF]

, 2010
In recent years, a Lagrangian Coherent Structures (LCS) method was developed to identify boundaries between distinct kinematic regions in unsteady flows.
Peng, Jifeng
core   +1 more source

A Perspective on Interactive Theorem Provers in Physics

Advanced Science, EarlyView.
Into an interactive theorem provers (ITPs), one can write mathematical definitions, theorems and proofs, and the correctness of those results is automatically checked. This perspective goes over the best usage of ITPs within physics and motivates the open‐source community run project PhysLean, the aim of which is to be a library for digitalized physics
Joseph Tooby‐Smith
wiley   +1 more source

BRST-BV approach to continuous-spin field

Physics Letters B, 2018
Using BRST-BV approach, massless and massive continuous-spin fields propagating in the flat space are studied. For such fields, BRST-BV gauge invariant Lagrangian is obtained.
R.R. Metsaev
doaj   +1 more source

Numerical study on the hot compression test for bulk metal forming application

SN Applied Sciences, 2022
Article highlights Cylindrical compression test is modeled by finite element method and compared with experimental results. The Lagrangian and the Arbitrary Lagrangian–Eulerian (ALE) approaches are used to model the experiments.
Diego Gomez-Marquez, Elias Ledesma-Orozco, Ryutaro Hino, Eduardo Aguilera-Gomez, Grzegorz Korpała, Ulrich Prahl   +5 more
doaj   +1 more source

Lagrangian Constant Cycle Subvarieties in Lagrangian Fibrations [PDF]

International Mathematics Research Notices, 2018
Abstract We show that the image of a dominant meromorphic map from an irreducible compact Calabi–Yau manifold X whose general fiber is of dimension strictly between 0 and $\dim X$ is rationally connected. Using this result, we construct for any hyper-Kähler manifold X admitting a Lagrangian fibration a Lagrangian constant cycle ...
openaire   +2 more sources

Lagrangian techniques for particle flux and concentration [PDF]

, 2010
A new technique is proposed for computing Eulerian particle concentration and fluxes based on Lagrangian particle trajectories. In particular, a Lagrangian concentration differential equation is solved along a particle path using Eulerian derivatives ...
Wang, Sida
core  

An exciting Approach to Theoretical Spectroscopy

Advanced Science, EarlyView.
ABSTRACT Theoretical spectroscopy, and more generally, electronic‐structure theory, are powerful concepts for describing the complex many‐body interactions in materials. They cover methods from ground‐state properties to lattice excitations and light‐matter interaction, including time‐resolved variants.
Martí Raya‐Moreno, Alexander Buccheri, Noah Alexy Dasch, Nasrin Farahani, Ignacio Gonzalez Oliva, Andris Gulans, Seokhyun Hong, Manoar Hossain, Hannah Kleine, Martin Kuban, Sven Lubeck, Benedikt Maurer, Pasquale Pavone, Fabian Peschel, Daria Popova‐Gorelova, Lu Qiao, Elias Richter, Santiago Rigamonti, Ronaldo Rodrigues Pela, Maximilian Schebek, Kshitij Sinha, Daniel T. Speckhard, Jan Stutz, Sebastian Tillack, Dmitry Tumakov, Jānis Užulis, Mara Voiculescu, Cecilia Vona, Mao Yang, Claudia Draxl   +29 more
wiley   +1 more source

Portfolio Optimization. Application of the Markowitz Model Using Lagrange and Profitability Forecast

Expert Journal of Economics, 2018
This paper presents the theoretical and applicative model elaborated by Harry Markowitz on the determination of the structure of the efficient securities portfolio.
Vasile BRĂTIAN
doaj