Results 11 to 20 of about 14,664 (104)

Invariant Measure and Universality of the 2D Yang–Mills Langevin Dynamic

Communications on Pure and Applied Mathematics, EarlyView.
ABSTRACT We prove that the Yang–Mills (YM) measure for the trivial principal bundle over the two‐dimensional torus, with any connected, compact structure group, is invariant for the associated renormalised Langevin dynamic. Our argument relies on a combination of regularity structures, lattice gauge‐fixing and Bourgain's method for invariant measures ...
Ilya Chevyrev, Hao Shen
wiley   +1 more source

Asymptotics for the Spectrum of the Laplacian in Thin Bars with Varying Cross Sections

Mathematical Methods in the Applied Sciences, EarlyView.
ABSTRACT We consider spectral problems for the Laplace operator in 3D rod structures with a small cross section of diameter O(ε)$$ O\left(\varepsilon \right) $$, ε$$ \varepsilon $$ being a positive parameter. The boundary conditions are Dirichlet (Neumann, respectively) on the bases of this structure, and Neumann on the lateral boundary.
Pablo Benavent‐Ocejo, Delfina Gómez, Maria‐Eugenia Pérez‐Martínez   +2 more
wiley   +1 more source

The Linearized Inverse Boundary Value Problem in Strain Gradient Elasticity

Mathematical Methods in the Applied Sciences, EarlyView.
ABSTRACT In this paper we study the linearized version of the strain gradient elasticity equation in ℝ2$$ {\mathbb{R}}^2 $$ with constant coefficients and we prove that one can determine the two Lamé coefficients λ,μ$$ \lambda, \mu $$ as well as the internal strain gradient parameter g$$ g $$, as indicated by Mindlin in his revolutionary papers in 1963–
Antonios Katsampakos, Antonios Charalambopoulos   +1 more
wiley   +1 more source

Adaptive Sliding‐Mode Control of a Perturbed Diffusion Process With Pointwise In‐Domain Actuation

International Journal of Robust and Nonlinear Control, EarlyView.
ABSTRACT A sliding mode–based adaptive control law is proposed for a class of diffusion processes featuring a spatially‐varying uncertain diffusivity and equipped with several point‐wise actuators located at the two boundaries of the spatial domain as well as in its interior.
Paul Mayr, Alessandro Pisano, Stefan Koch, Markus Reichhartinger   +3 more
wiley   +1 more source

SDFs from Unoriented Point Clouds using Neural Variational Heat Distances

Computer Graphics Forum, EarlyView.
We propose a novel variational approach for computing neural Signed Distance Fields (SDF) from unoriented point clouds. We first compute a small time step of heat flow (middle) and then use its gradient directions to solve for a neural SDF (right). Abstract We propose a novel variational approach for computing neural Signed Distance Fields (SDF) from ...
Samuel Weidemaier, Florine Hartwig, Josua Sassen, Sergio Conti, Mirela Ben‐Chen, Martin Rumpf   +5 more
wiley   +1 more source

On initial conditions and global existence for accelerating cosmologies from string theory

, 2005
We construct a solution satisfying initial conditions for accelerating cosmologies from string/M-theory. Gowdy symmetric spacetimes with a positive potential are considered.
Narita, Makoto
core   +2 more sources

Measure‐valued processes for energy markets

Mathematical Finance, Volume 35, Issue 2, Page 520-566, April 2025.
Abstract We introduce a framework that allows to employ (non‐negative) measure‐valued processes for energy market modeling, in particular for electricity and gas futures. Interpreting the process' spatial structure as time to maturity, we show how the Heath–Jarrow–Morton approach can be translated to this framework, thus guaranteeing arbitrage free ...
Christa Cuchiero, Luca Di Persio, Francesco Guida, Sara Svaluto‐Ferro   +3 more
wiley   +1 more source

From Geometry to Numerics: interdisciplinary aspects in mathematical and numerical relativity

, 2008
This article reviews some aspects in the current relationship between mathematical and numerical General Relativity. Focus is placed on the description of isolated systems, with a particular emphasis on recent developments in the study of black holes ...
Aksoylu B Bernstein D Bond S Holst M, Alvi K, Andersson L, Andersson L, Andersson L, Andersson L, Andersson L Mars M Simon W, Andersson L Metzger J, Andersson L Metzger J, Andersson N, Andréasson H, Andréasson H, Ansorg M, Ansorg M, Ansorg M, Arnowitt R, Ashtekar A, Ashtekar A, Ashtekar A, Ashtekar A, Ashtekar A, Ashtekar A, Ashtekar A, Ashtekar A, Ashtekar A, Ashtekar A, Ashtekar A, Babiuc M, Babiuc M, Baker J G, Bartnik R, Bartnik R, Bary H, Beig R, Beig R, Berger B K, Bergmann P, Beyer F, Bishop N T, Bishop N T, Bizon P, Bičák J, Bičák J, Blanchet L, Bona C, Bona C Alic D, Booth I, Booth I, Booth I, Booth I Fairhurst S, Bray H, Brown J, Brügmann B González J A Hannam M Husa S Sperhake U Tichy W, Buchman L T, Buchman L T, Calabrese G, Campanelli M, Campanelli M Lousto C O Zlochower Y, Carrasco A, Cartan E, Chiba T, Choptuik M W, Choquet-Bruhat Y, Choquet-Bruhat Y, Choquet-Bruhat Y, Choquet-Bruhat Y York J W, Choquet-Bruhat Y York J W, Christodoulou D, Chruściel P T, Chruściel P T, Chruściel P T, Chruściel P T, Chruściel P T, Claudel C-M, Cook G B, Corvino J, Dafermos M, Dafermos M, Dain S, Dain S, Dain S, Dain S, Dain S, Dain S, Dain S, Dain S, Damour T, Damour T Ruffini R, Darmois G, Dirac P A M, Donder T D, Ellis G F R, Ellis G F R, Eric Gourgoulhon, Evans C R, Evans C R, Fock V A, Font J A, Frauendiener J, Frauendiener J, Frauendiener J, Friedrich H, Friedrich H, Friedrich H, Friedrich H, Friedrich H, Friedrich H, Garfinkle D, Gentle A P, Geroch R, Gibbons G, Gibbons G, Gibbons G W, Gibbons G W, Gibbons G W, Giulini D, Giulini D, Gourgoulhon E, Gourgoulhon E, Gourgoulhon E Jaramillo J L (organisers), Grandclément P, Gundlach C, Gundlach C Martín-García J M, Hannam M, Hannam M, Hawking S W, Hayward S A, Hennig J Ansorg M, Herrmann F, Heusler M, Huisken G, Hájiček P, Hübner P, Hübner P, Hübner P, Hübner P, Hübner P Weaver M, Ionescu A D Klainerman S, Ionescu A D Klainerman S, Isenberg J, Isenberg J, Isenberg J A, Isenberg J A, Israel W, Israel W, Jaramillo J L Vasset N Ansorg M, José Luis Jaramillo, Juan Antonio Valiente Kroon, Karkowski J, Karkowski J, Karkowski J, Karkowski J, Klainerman S, Klainerman S, Klainerman S, Kokkotas K D, Korobkin O Aksoylu B Holst M Pazos E Tiglio M, Korzynski M, Kreiss H-O, Kreiss H-O, Krishnan B, Lehner L, Lehner L, Lewandowski J, Lichnerowicz A, Lichnerowicz A, Lin L-M, Lindblad H Rodnianski I, Lindblom L, Lindblom L Matthews K D Rinne O Scheel M A, Malec E, Malec E, Malec E, Malec E, Mars M, Mars M, Mars M, Mars M, Martí J M, Martín-García J M, Metzger J, Metzger J, Misner C W, Moncrief V, Nielsen A B, Nielsen A B Yoon J H, Penrose R, Penrose R, Penrose R, Penrose R, Petroff D Ansorg M, Poisson E, Pretorius F, Pretorius F, Pretorius F, Price R H, Racz I, Reisswig C, Rendall A D, Rendall A D, Reula O A, Reula O A, Richter R, Rinne O, Rinne O, Rinne O, Rinne O, Rinne O, Ruiz M, Sarbach O, Seiler J Szilágyi B Pollney D Rezzolla L, Senovilla J M M, Senovilla J M M, Senovilla J M M, Shinkai H Yoneda G, Smith B, Sopuerta C F, Sperhake U, Stephani H, Stewart J M, Szabados L B, Szabados L B, Szabados L B, Szilagyi B, Sánchez M, Thiemann T, Thornburg J, Thornburg J, Thornburg J, Thorne K, Thorne K, Valiente Kroon J A, Valiente Kroon J A, Valiente Kroon J A, Valiente Kroon J A, Wald R M, Wald R M, Walsh D, Wheeler J, Whelan J T, Whelan J T, Williams C, Wilson J, Winicour J, York J W, Yoshida S, Zenginoğlu A, Zenginoğlu A, Zenginoğlu A, Åman J   +249 more
core   +3 more sources

Reinforcement Learning for Jump‐Diffusions, With Financial Applications

Mathematical Finance, EarlyView.
ABSTRACT We study continuous‐time reinforcement learning (RL) for stochastic control in which system dynamics are governed by jump‐diffusion processes. We formulate an entropy‐regularized exploratory control problem with stochastic policies to capture the exploration–exploitation balance essential for RL.
Xuefeng Gao, Lingfei Li, Xun Yu Zhou
wiley   +1 more source

Equilibrium Reward for Liquidity Providers in Automated Market Makers

Mathematical Finance, EarlyView.
ABSTRACT We find the equilibrium contract that an automated market maker (AMM) offers to their strategic liquidity providers (LPs) in order to maximize the order flow that gets processed by the venue. Our model is formulated as a leader–follower stochastic game, where the venue is the leader and a representative LP is the follower.
Alif Aqsha, Philippe Bergault, Leandro Sánchez‐Betancourt   +2 more
wiley   +1 more source