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Akademický článek

SARTRE, BRÉHIER ET LA VIE PSYCHOLOGIQUE: UNE HISTOIRE DES IMAGES

Autor: Dassonneville, Gautier

Publikováno v: Tijdschrift voor Filosofie, 2017 Sep 01. 79(3), 541-564.

Externí odkaz: https://www.jstor.org/stable/26493925

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Asymptotic error analysis for stochastic gradient optimization schemes with first and second order modified equations

Autor: Bréhier, Charles-Edouard, Dambrine, Marc, En-Nebbazi, Nassim

We consider a class of stochastic gradient optimization schemes. Assuming that the objective function is strongly convex, we prove weak error estimates which are uniform in time for the error between the solution of the numerical scheme, and the solu

Externí odkaz: http://arxiv.org/abs/2411.05538

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Akademický článek

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General non-linear fragmentation with discontinuous Galerkin methods

Autor: Lombart, Maxime, Bréhier, Charles-Edouard, Hutchison, Mark, Lee, Yueh-Ning

Dust grains play a significant role in several astrophysical processes, including gas/dust dynamics, chemical reactions, and radiative transfer. Replenishment of small-grain populations is mainly governed by fragmentation during pair-wise collisions

Externí odkaz: http://arxiv.org/abs/2404.11851

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Numerical simulations of a stochastic dynamics leading to cascades and loss of regularity: applications to fluid turbulence and generation of fractional Gaussian fields

Autor: Beck, Geoffrey, Bréhier, Charles-Edouard, Chevillard, Laurent, Grande, Ricardo, Ruffenach, Wandrille

Publikováno v: Phys. Rev. Research 6, 033048 (2024)

Motivated by the modeling of the spatial structure of the velocity field of three-dimensional turbulent flows, and the phenomenology of cascade phenomena, a linear dynamics has been recently proposed able to generate high velocity gradients from a sm

Externí odkaz: http://arxiv.org/abs/2403.05401

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Akademický článek

THE ANCIENT STOICS, ÉMILE BRÉHIER, AND BECKETT'S BEINGS OF VIOLENCE

Autor: Uhlmann, Anthony

Publikováno v: Samuel Beckett Today / Aujourd'hui, 2001 Jan 01. 11, 351-360.

Externí odkaz: https://www.jstor.org/stable/25781386

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Splitting integrators for linear Vlasov equations with stochastic perturbations

Autor: Bréhier, Charles-Edouard, Cohen, David

We consider a class of linear Vlasov partial differential equations driven by Wiener noise. Different types of stochastic perturbations are treated: additive noise, multiplicative It\^o and Stratonovich noise, and transport noise. We propose to emplo

Externí odkaz: http://arxiv.org/abs/2402.18982

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