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We give necessary and sufficient conditions for both square integrability and smoothness for densities of a probability measure on a compact connected Lie group.

Probability · Mathematics 2011-09-15 David Applebaum

We study the porous medium equation on manifolds with conical singularities. Given strictly positive initial values, we show that the solution exists in the maximal $L^{q}$-regularity space for all times and is instantaneously smooth in…

Analysis of PDEs · Mathematics 2019-03-19 Nikolaos Roidos , Elmar Schrohe

Ben Andrews classified the limiting shape for isotropic curvature flow corresponding to the solutions of the $L_p$-Minkowski problem as $p\to-\infty$ in the planar case. In this paper, we use the group-invariant method to study the…

Analysis of PDEs · Mathematics 2025-01-27 Shi-Zhong Du , Xu-Jia Wang , Baocheng Zhu

In this paper, we consider a class of Hessian equations associated to the $L_p$-dual Christoffel-Minkowski problem for the case $p\geq q$. By combining the tools of constant rank theorem, the a priori estimates and the continuity method, we…

Analysis of PDEs · Mathematics 2025-04-02 Xiaojuan Chen , Qiang Tu , Ni Xiang

We show that given a real number $p<1$, a positive integer $n$ and a proper subspace $H$ of $\mathbb{R}^n$, the measure on the Euclidean sphere $\mathbb{S}^{n-1}$, which is concentrated in $H$ and whose restriction to the class of Borel…

Metric Geometry · Mathematics 2021-09-15 Christos Saroglou

The first goal of this paper is to improve some of the results in \cite{BCPR}. Namely, we establish the $L_p$-Brunn-Minkwoski inequality for intrinsic volumes for origin-symmetric convex bodies that are close to the ball in the $C^2$ sense…

Metric Geometry · Mathematics 2026-01-16 Konstantinos Patsalos , Christos Saroglou

We revisit the geometrically decaying step size given a positive inverse condition number, under which a locally Lipschitz function shows linear convergence. The positivity does not require the function to satisfy convexity, weak convexity,…

Optimization and Control · Mathematics 2025-12-04 Jihun Kim

Existence of solution of the logarithmic Minkowski problem is proved for the case where the discrete measures on the unit sphere satisfy the subspace concentration condition with respect to some special proper subspaces. In order to…

Metric Geometry · Mathematics 2015-06-04 Karoly J. Boroczky , Pal Hegedus , Guangxian Zhu

The dual $L_p$-Minkowski problem with $p<0<q$ is investigated in this paper. By proving a new existence result of solutions and constructing an example, we obtain the non-uniqueness of solutions to this problem.

Analysis of PDEs · Mathematics 2019-10-16 Qi-Rui Li , Jiakun Liu , Jian Lu

Minkowski's Theorem asserts that every centered measure on the sphere which is not concentrated on a great subsphere is the surface area measure of some convex body, and, moreover, the surface area measure determines a convex body uniquely.…

Classical Analysis and ODEs · Mathematics 2017-04-18 Galyna V. Livshyts

The even Gaussian dual Minkowski problem studied by Feng, Hu and Xu, In this paper, we consider the even $L_p$ dual-Gaussian Minkowski problem for $p>1$. The existence of $o$-symmetric solution in the case $p>1$ is obtained.

Functional Analysis · Mathematics 2024-12-19 W. Shi , J. C. Liu

For $p\in (-\infty,0)\cup(0,1)$ and a convex body $K\subset\mathbb{R}^n$ with the origin in its interior, we construct the family of $p$-affine dual curvature measures $\mathcal{I}_p(K,\cdot)$ with respect to $K$. The affine-invariant…

Metric Geometry · Mathematics 2026-03-06 Youjiang Lin , Yuchi Wu

We show that if $p_-\geq 2$, then a sufficient condition for the density of smooth functions with compact support, in the variable exponent Sobolev space $W^{1,p(\cdot)}(\mathbb R^n)$, is that the Riesz potentials of compactly supported…

Functional Analysis · Mathematics 2015-07-14 Thanasis Kostopoulos , Nikos Yannakakis

We investigate the best order of smoothness of $L^p(L^q)$. We prove in particular that there exists a $C^\infty$-smooth bump function on $L^p(L^q)$ if and only if $p$ and $q$ are both even integers and $p$ is a multiple of $q$.

Functional Analysis · Mathematics 2009-10-31 R. Deville , R. Gonzalo , J. A. Jaramillo

We consider the problem of lower bounding a generalized Minkowski measure of subsets of a convex body with a log-concave probability measure, conditioned on the set size. A bound is given in terms of diameter and set size, which is sharp…

Functional Analysis · Mathematics 2007-05-23 Ravi Montenegro

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…

Analysis of PDEs · Mathematics 2022-02-22 Shibing Chen , Yibin Feng , Weiru Liu

The $L_p$ chord Minkowski problem was recently introduced by Lutwak, Xi, Yang and Zhang, which seeks to determine the necessary and sufficient conditions for a given finite Borel measure such that it is the $L_p$ chord measure of a convex…

Analysis of PDEs · Mathematics 2025-10-02 Shibing Chen , Qi-Rui Li , Yuanyuan Li

An Orlicz version of the $L_p$-Minkowski problem on $S^{n-1}$ is discussed corresponding to the case $-n<p<0$.

Analysis of PDEs · Mathematics 2020-09-03 Gabriele Bianchi , Károly J. Böröczky , Andrea Colesanti

In [Calc. Var., 57:5 (2018)], Hong-Ye-Zhang proposed the $p$-capacitary Orlicz-Minkowski problem and proved the existence of convex solutions to this problem by variational method for $p\in(1,n)$. However, the smoothness and uniqueness of…

Analysis of PDEs · Mathematics 2023-05-25 Bin Chen , Weidong Wang , Xia Zhao , Peibiao Zhao

The Minkowski problem for torsional rigidity ($2$-torsional rigidity) was firstly studied by Colesanti and Fimiani \cite{CA} using variational method. Moreover, Hu \cite{HJ00} also studied this problem by the method of curvature flows and…

Differential Geometry · Mathematics 2024-12-23 Xia Zhao , Peibiao Zhao