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A new approach is described to help improve the foundations of relativistic viscous fluid dynamics and its coupling to general relativity. Focusing on neutral conformal fluids constructed solely in terms of hydrodynamic variables, we derive…

广义相对论与量子宇宙学 · 物理学 2018-12-05 Fabio S. Bemfica , Marcelo M. Disconzi , Jorge Noronha

B\"or\"oczky, Lutwak, Yang and Zhang recently proved the log-Brunn-Minkowski inequality which is stronger than the classical Brunn-Minkowski inequality for two origin-symmetric convex bodies in the plane. This paper establishes the…

微分几何 · 数学 2018-10-16 Yunlong Yang , Deyan Zhang

In this paper, given a prescribed measure on $\mathbb{S}^1$ whose density is bounded and positive, we establish a uniform diameter estimate for solutions to the planar $L_p$ dual Minkowski problem when $0<p<1$ and $q\ge 2$. We also prove…

微分几何 · 数学 2022-08-15 Minhyun Kim , Taehun Lee

In this paper we study a contracting flow of closed, convex hypersurfaces in the Euclidean space $\mathbb R^{n+1}$ with speed $f r^{\alpha} K$, where $K$ is the Gauss curvature, $r$ is the distance from the hypersurface to the origin, and…

偏微分方程分析 · 数学 2017-12-22 Qi-Rui Li , Weimin Sheng , Xu-Jia Wang

A variational formula is derived by combining the Gaussian volume of the epigraph of a convex function $\varphi$ and the perturbation of $\varphi$ via the infimal convolution. This formula naturally leads to a Borel measure on…

泛函分析 · 数学 2025-08-19 Xiao Li , Deping Ye

In \cite{LX}, the first author and the third author introduced and studied the horospherical $p$-Minkowski problem for smooth horospherically convex domains in hyperbolic space. In this paper, we introduce and solve the discrete…

度量几何 · 数学 2023-10-06 Haizhong Li , Yao Wan , Botong Xu

We investigate the differences and similarities of the Dirichlet problem of the mean curvature equation in the Euclidean space and in the Lorentz-Minkowski space. Although the solvability of the Dirichlet problem follows standards…

微分几何 · 数学 2019-12-18 Rafael López

The current work focuses on the Gaussian-Minkowski problem in dimension 2. In particular, we show that if the Gaussian surface area measure is proportional to the spherical Lebesgue measure, then the corresponding convex body has to be a…

度量几何 · 数学 2023-03-31 Shibing Chen , Shengnan Hu , Weiru Liu , Yiming Zhao

The $L^p$-Brunn-Minkowski theory for $p\geq 1$, proposed by Firey and developed by Lutwak in the 90's, replaces the Minkowski addition of convex sets by its $L^p$ counterpart, in which the support functions are added in $L^p$-norm.…

泛函分析 · 数学 2018-02-22 Alexander V. Kolesnikov , Emanuel Milman

The aim of this paper is to develop a basic framework of the $L_p$ theory for the geometry of log-concave functions, which can be viewed as a functional "lifting" of the $L_p$ Brunn-Minkowski theory for convex bodies. To fulfill this goal,…

泛函分析 · 数学 2020-07-01 Niufa Fang , Sudan Xing , Deping Ye

For metric measure spaces verifying the reduced curvature-dimension condition $CD^*(K,N)$ we prove a series of sharp functional inequalities under the additional assumption of essentially non-branching. Examples of spaces entering this…

度量几何 · 数学 2019-05-08 Fabio Cavalletti , Andrea Mondino

In his beautiful paper [1], Ben Andrews obtained the complete classification of the solutions of the planar isotropic $L_p$ Minkowski problem. In this paper, by generalizing Ben Andrews's result we obtain the complete classification of the…

微分几何 · 数学 2022-10-03 Haizhong Li , Yao Wan

In this paper, we prove the uniqueness of solutions to the logarithmic Minkowski problem in $\mathbb{R}^3$ without symmetry condition, provided the density of the measure is close to $1$ in $C^{\alpha}$ norm. This result also implies the…

偏微分方程分析 · 数学 2022-02-22 Shibing Chen , Yibin Feng , Weiru Liu

The $L_{p}$ Gaussian Minkowski problem for $C$-pseudo-cones is studied in this paper, and the existence and uniqueness results are established. This extends our previous work on the Minkowski problem for $C$-pseudo-cones with respect to the…

度量几何 · 数学 2025-03-04 Junjie Shan , Wenchuan Hu

The infinitesimal forms of the $L_{p}$-Brunn-Minkowski inequalities for variational functionals, such as the $q$-capacity, the torsional rigidity, and the first eigenvalue of the Laplace operator, are investigated for $p \geq 0$. These…

偏微分方程分析 · 数学 2025-07-08 Jinrong Hu

In this paper, combining the $p$-capacity for $p\in (1, n)$ with the Orlicz addition of convex domains, we develop the $p$-capacitary Orlicz-Brunn-Minkowski theory. In particular, the Orlicz $L_{\phi}$ mixed $p$-capacity of two convex…

度量几何 · 数学 2017-11-21 Han Hong , Deping Ye , Ning Zhang

The Minkowski problem for electrostatic capacity characterizes measures generated by electrostatic capacity, which is a well-known variant of the Minkowski problem. This problem has been generalized to $L_p$ Minkowski problem for…

微分几何 · 数学 2021-11-16 Minhyun Kim , Taehun Lee

In this paper, we propose and study the polar Orlicz-Minkowski problems: under what conditions on a nonzero finite measure $\mu$ and a continuous function $\varphi:(0,\infty)\rightarrow(0,\infty)$, there exists a convex body…

度量几何 · 数学 2018-02-23 Xiaokang Luo , Deping Ye , Baocheng Zhu

This paper establishes two new geometric inequalities in the dual Brunn-Minkowski theory. The first, originally conjectured by Lutwak, is the Brunn-Minkowski inequality for dual quermassintegrals of origin-symmetric convex bodies. The…

度量几何 · 数学 2025-05-30 Shay Sadovsky , Gaoyong Zhang

We present new exact solutions for two-dimensional geometries generated by continuous distributions of topological defects within a conformal metric framework. By reformulating Einstein's equations in two dimensions as a Poisson equation…

广义相对论与量子宇宙学 · 物理学 2025-07-09 A. M. de M. Carvalho , G. Q. Garcia , C. Furtado