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We study existence and Lorentz regularity of distributional solutions to elliptic equations with either a convection or a drift first order term. The presence of such a term makes the problem not coercive. The main tools are pointwise…

偏微分方程分析 · 数学 2021-06-16 Stefano Buccheri

A notion of parabolic C-subsolutions is introduced for parabolic equations, extending the theory of C-subsolutions recently developed by B. Guan and more specifically G. Sz\'ekelyhidi for elliptic equations. The resulting parabolic theory…

微分几何 · 数学 2017-12-15 Duong H. Phong , Dat T. Tô

A new eigenvalue analysis is developed and applied to the circular cylinder laminar flow configuration to investigate the various mechanisms at play in the nonlinear saturation of perturbations yielding to limit cycles for supercritical…

流体动力学 · 物理学 2020-08-25 Olivier Marquet , Marco Carini

Nield-Kuznetsov functions of the first kind are studied, which are solutions of an inhomogeneous parabolic Weber equation, and have applications in fluid flow problems. Connection formulas are constructed between them, numerically…

经典分析与常微分方程 · 数学 2021-10-12 T. M. Dunster

We use a novel parameterization of the flowing Hamiltonian to show that the flow equations based on continuous unitary transformations, as proposed by Wegner, can be implemented through a nonlinear partial differential equation involving…

其他凝聚态物理 · 物理学 2015-06-24 J. N. Kriel , A. Y. Morozov , F. G. Scholtz

We develop an optimal regularity theory for $L^p$-viscosity solutions of fully nonlinear uniformly elliptic equations in nondivergence form whose gradient growth is described through a Hamiltonian function with measurable and possibly…

偏微分方程分析 · 数学 2020-12-21 João Vitor da Silva , Gabrielle Nornberg

We prove new borderline regularity results for solutions to fully nonlinear elliptic equations together with pointwise gradient potential estimates.

偏微分方程分析 · 数学 2012-05-23 Panagiota Daskalopoulos , Tuomo Kuusi , Giuseppe Mingione

Elliptic flow, $v_2$, and triangular flow, $v_3$, are to a good approximation linearly proportional to the corresponding spatial anisotropies of the initial density profile, $\varepsilon_2$ and $\varepsilon_3$. Using event-by-event…

核理论 · 物理学 2017-05-25 Giuliano Giacalone , Jacquelyn Noronha-Hostler , Jean-Yves Ollitrault

We prove a convergence result for a natural discretization of the Dirichlet problem of the elliptic Monge-Ampere equation using finite dimensional spaces of piecewise polynomial C0 or C1 functions. Standard discretizations of the type…

数值分析 · 数学 2015-07-31 Gerard Awanou

In this paper, we introduce a class of nonlinear optimisation problems. Under mild assumptions, we obtain the existence of potential functions and show that the potential function is a generalised solution of a Monge-Amp\`ere type equation.…

偏微分方程分析 · 数学 2019-09-13 Jiakun Liu

First we introduce and analyze a convergent numerical method for a large class of nonlinear nonlocal possibly degenerate convection diffusion equations. Secondly we develop a new Kuznetsov type theory and obtain general and possibly optimal…

数值分析 · 数学 2014-07-01 Simone Cifani , Espen R. Jakobsen

We investigate multidimensional model for incompressible non-Newtonian fluids. Using method of energy estimates we prove the property of finite speed of propagations of the solution support for this problem. We find sharp bounds of the…

偏微分方程分析 · 数学 2007-12-10 Roman Taranets , Yuliya Namlyeyeva

We introduce the so-called $d$-concavity, $d \geq 0,$ and prove that the nonsymmetric Monge-Amp\`{e}re type function of matrix variable is concave in an appropriate unbounded and convex set. We prove also the comparison principle for…

偏微分方程分析 · 数学 2017-09-20 Ha Tien Ngoan , Thai Thi Kim Chung

In this paper, we study a general class of Hessian elliptic equations, including the Monge-Amp\`ere equation, the $k$-Hessian equation and $p$-Monge-Amp\`ere equations. We propose new additional condition on the solution and prove Liouville…

偏微分方程分析 · 数学 2023-06-27 Jianchun Chu , Sławomir Dinew

We herein propose a variant of the projected inexact Levenberg--Marquardt method (ILMM) for solving constrained nonsmooth equations. Since the orthogonal projection onto the feasible set may be computationally expensive, we propose a local…

最优化与控制 · 数学 2021-05-06 Fabiana R. de Oliveira , Fabrícia R. Oliveira

We prove the $W^{1,2}_{p}$-solvability of second order parabolic equations in nondivergence form in the whole space for $p\in (1,\infty)$. The leading coefficients are assumed to be measurable in one spatial direction and have vanishing…

偏微分方程分析 · 数学 2008-11-26 Hongjie Dong

The first measurements of elliptic flow of $\pi^\pm$, ${\rm K}^\pm$, p+$\overline{\rm p}$, ${\rm K_{S}^0}$, $\Lambda$+$\overline{\Lambda}$, $\phi$, $\Xi^-$+$\Xi^+$, and $\Omega^-$+$\Omega^+$ using multiparticle cumulants in Pb$-$Pb…

核实验 · 物理学 2023-06-16 ALICE Collaboration

We consider both divergence and non-divergence parabolic equations on a half space in weighted Sobolev spaces. All the leading coefficients are assumed to be only measurable in the time and one spatial variable except one coefficient, which…

偏微分方程分析 · 数学 2014-03-12 Hongjie Dong , Doyoon Kim

A nonlinear coupled system descriptive of multi-ion electrodiffusion is investigated and all parameters for which the system admits a single-valued general solution are isolated. This is achieved \textit{via} a method initiated by Painleve'…

可精确求解与可积系统 · 物理学 2017-10-16 Robert Conte , Colin Rogers , Wolfgang Schief

In this work we derive global estimates for viscosity solutions to fully nonlinear elliptic equations under relaxed structural assumptions on the governing operator which are weaker than convexity and oblique boundary conditions and under…

偏微分方程分析 · 数学 2023-06-02 Junior da S. Bessa , João Vitor da Silva , Maria N. B. Frederico , Gleydson C. Ricarte