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We introduce a new sphericalization mapping for metric spaces that is applicable in very general situations, including totally disconnected fractal type sets. For an unbounded complete metric space which is uniformly perfect at a base point…

Functional Analysis · Mathematics 2026-05-01 Anders Björn , Jana Björn , Riikka Korte , Sari Rogovin , Timo Takala

In this paper, we study the Helmholtz transmission eigenvalue problem for inhomogeneous anisotropic media with the index of refraction $n(x)\equiv 1$ in two and three dimension. Starting with a nonlinear fourth order formulation established…

Numerical Analysis · Mathematics 2023-04-26 Qing Liu , Tiexiang Li , Shuo Zhang

Finsleroid-Finsler metrics form an important class of singular (y-local) Finsler metrics. They were introduced by G. S. Asanov [2] in 2006. As the special case of the general construction Asanov produced singular (y - local) examples of…

Differential Geometry · Mathematics 2016-02-01 Csaba Vincze

We consider the corresponding Christoffel-Minkowski problem for curvature measures. The existence of star-shaped $(n-k)$-convex bodies with prescribed $k$-th curvature measures ($k>0$) has been a longstanding problem. This is settled in…

Differential Geometry · Mathematics 2019-12-19 Pengfei Guan , Junfang Li , YanYan Li

The existence of minimizers in the fractional isoperimetric problem with multiple volume constraints is proved, together with a partial regularity result.

Optimization and Control · Mathematics 2016-05-19 Maria Colombo , Francesco Maggi

In this paper, we study the long-time existence and asymptotic behavior for a class of anisotropic non-homogeneous curvature flows without global forcing terms. By the stationary solutions of such anisotropic flows, we obtain existence…

Differential Geometry · Mathematics 2024-01-03 Shanwei Ding , Guanghan Li

The statistical measure of spatial inhomogeneity for n points placed in chi cells each of size kxk is generalized to incorporate finite size objects like black pixels for binary patterns of size LxL. As a function of length scale k, the…

Statistical Mechanics · Physics 2009-11-11 Ryszard Piasecki

Lutwak, Yang and Zhang [23] introduced the concept of Lp dual curvature measure for convex bodies and star bodies, and studied the Minkowski problem. We in this paper establish a new unified concept, in briefly, the (p,q)-mixed…

Differential Geometry · Mathematics 2020-12-16 Bin Chen , Weidong Wang , Peibiao Zhao

In this work we study the asymptotics of the fractional Laplacian as $s\to 0^+$ on any complete Riemannian manifold $(M,g)$, both of finite and infinite volume. Surprisingly enough, when $M$ is not stochastically complete this asymptotics…

Differential Geometry · Mathematics 2024-05-24 Michele Caselli , Luca Gennaioli

In this paper, we develop a basic theory of Orlicz affine and geominimal surface areas for convex and $s$-concave functions. We prove some basic properties for these newly introduced functional affine invariants and establish related…

Metric Geometry · Mathematics 2016-06-07 Umut Caglar , Deping Ye

A stability version of the reverse isoperimetric inequality, and the corresponding inequality for isotropic measures are established.

Metric Geometry · Mathematics 2015-01-13 Karoly J. Boroczky , Daniel Hug

In this paper, we give an interesting extension of the partial S-metric space which was introduced [4] to the M_s-metric space. Also, we prove the existence and uniqueness of a fixed point for a self mapping on an Ms-metric space under…

General Mathematics · Mathematics 2016-10-11 N. Mlaiki , N. Souayah , K. Abodayeh , T. Abdeljawad

Anisotropic spherically symmetric solutions within the framework of the Brans-Dicke theory are uncovered through a unique gravitational decoupling approach involving a minimal geometric transformation. This transformation effectively…

General Relativity and Quantum Cosmology · Physics 2023-11-01 Kazuharu Bamba , M. Z. Bhatti , Z. Yousaf , Z. Shoukat

We prove fractional Sobolev-Poincar\'e inequalities, capacitary versions of fractional Poincar\'e inequalities, and pointwise and localized fractional Hardy inequalities in a metric space equipped with a doubling measure. Our results…

Classical Analysis and ODEs · Mathematics 2021-08-17 Bartłomiej Dyda , Juha Lehrbäck , Antti V. Vähäkangas

In this paper, we revisit the notion of length measures associated to planar closed curves. These are a special case of area measures of hypersurfaces which were introduced early on in the field of convex geometry. The length measure of a…

Differential Geometry · Mathematics 2020-10-28 Nicolas Charon , Thomas Pierron

In this paper, we establish mean width inequalities of sections and projections of convex bodies for isotropic measures with complete equality conditions, which extends the recent work of Alonso-Guti\'{e}rrez and Brazitikos. Different from…

Metric Geometry · Mathematics 2022-08-08 Ai-Jun Li , Qingzhong Huang

The Gaussian surface area measure and the Gaussian cone measure for $C$-pseudo-cones are introduced and their corresponding Gaussian Minkowski problem and Gaussian log-Minkowski problem are proposed, respectively. The existence and…

Metric Geometry · Mathematics 2025-04-10 Junjie Shan , Wenchuan Hu , Wenxue Xu

We investigate anisotropic (piecewise) polynomial approximation of functions in Lebesgue spaces as well as anisotropic Besov spaces. For this purpose we study temporal and spacial moduli of smoothness and their properties. In particular, we…

Numerical Analysis · Mathematics 2025-12-17 Pedro Morin , Cornelia Schneider , Nick Schneider

A quantum deformation of the conformal algebra of the Minkowskian spacetime in $(3+1)$ dimensions is identified with a deformation of the $(4+1)$-dimensional AdS algebra. Both Minkowskian and AdS first-order non-commutative spaces are…

High Energy Physics - Theory · Physics 2015-06-26 Angel Ballesteros , N Rossano Bruno , Francisco J. Herranz

Elementary proofs of sharp isoperimetric inequalities on a normed space $(\mathbb{R}^n,||\cdot||)$ equipped with a measure $\mu = w(x) dx$ so that $w^p$ is homogeneous are provided, along with a characterization of the corresponding…

Functional Analysis · Mathematics 2014-06-24 Emanuel Milman , Liran Rotem