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We prove the existence of an optimal domain for minimizing the buckling load among all, possibly unbounded, open subsets of $\mathbb{R}^n$ ($n\geq 2$) with given measure. Our approach is based on the extension of a 2-dimensional existence…

Analysis of PDEs · Mathematics 2021-10-07 Kathrin Stollenwerk

The torsion function of a convex planar domain has convex level sets, but explicit formulae are known only for rectangles and ellipses. Here we study the torsion function on convex planar domains of high eccentricity. We obtain an…

Analysis of PDEs · Mathematics 2018-12-04 Thomas Beck

In a previous article the authors determined the best-known upper bound for the cardinality of the image set for several classes of functions, including planar functions. Here, we show that the upper bound cannot be tight for planar…

Combinatorics · Mathematics 2026-01-05 Robert Coulter , Steven Senger

J. E. Fornaess has posed the question whether the boundary point of smoothly bounded pseudoconvex domain is strictly pseudoconvex, if the asymptotic limit of the squeezing function is 1. The purpose of this paper is to give an affirmative…

Complex Variables · Mathematics 2016-12-09 Seungro Joo , Kang-Tae Kim

If a is a point in the domain of convergence of a planar power series f in a single variable x one con expand f into a planar power series in the variable (x-a). One arrives at the notion of planar analytic functions on any domain D in the…

Rings and Algebras · Mathematics 2007-05-23 Lothar Gerritzen

We give estimates for the squeezing function on strictly pseudoconvex domains, and derive some sharp estimates for the Caratheodory, Sibony and Azukawa metric near their boundaries.

Complex Variables · Mathematics 2014-11-17 John Erik Fornaess , Erlend Fornaess Wold

Spin squeezing is a form of entanglement that reshapes the quantum projection noise to improve measurement precision. Here, we provide numerical and analytic evidence for the following conjecture: any Hamiltonian exhibiting finite…

Loewner Theory, based on dynamical viewpoint, proved itself to be a powerful tool in Complex Analysis and its applications. Recently Bracci et al [Bracci et al, to appear in J. Reine Angew. Math. Available on ArXiv 0807.1594; Bracci et al,…

Complex Variables · Mathematics 2011-05-17 Manuel D. Contreras , Santiago Diaz-Madrigal , Pavel Gumenyuk

In this paper, we investigate the compactness of extremal functions for a critical singular anisotropic Trudinger-Moser inequality established by Lu-Shen-Xue-Zhu\cite{ref1}. We prove by means of blow-up analysis that the extremals…

Analysis of PDEs · Mathematics 2025-12-09 Weiwei Shan , Minbo Yang , Jiazheng Zhou

The squeezing problem on $\mathbb{C}$ can be stated as follows. Suppose that $\Omega$ is a multiply connected domain in the unit disk $\mathbb{D}$ containing the origin $z=0$. How far can the boundary of $\Omega$ be pushed from the origin…

Complex Variables · Mathematics 2021-01-12 Alexander Yu. Solynin

This paper extends the univariate Theory of Connections, introduced in (Mortari,2017), to the multivariate case on rectangular domains with detailed attention to the bivariate case. In particular, it generalizes the bivariate Coons surface,…

General Mathematics · Mathematics 2019-03-04 Daniele Mortari , Carl Leake

The purpose of this article is twofold. The first aim is to characterize $h$-extendibility of smoothly bounded pseudoconvex domains in $\mathbb C^{n+1}$ by their noncompact automorphism groups. Our second goal is to show that if the…

Complex Variables · Mathematics 2019-12-25 Ninh Van Thu , Nguyen Quang Dieu

Exactly solvable models of planar polygons, weighted by perimeter and area, have deepened our understanding of the critical behaviour of polygon models in recent years. Based on these results, we derive a conjecture for the exact form of…

Statistical Mechanics · Physics 2007-05-23 C. Richard , I. Jensen , A. J. Guttmann

This note investigates the relation between squeezing function and its generalizations. Using the relation obtained, we present an alternate method to find expression of generalized squeezing function of unit ball corresponding to the…

Complex Variables · Mathematics 2022-11-30 Naveen Gupta , Sanjay Kumar Pant

In this paper, using blow-up analysis, we prove a singular Hardy-Morser-Trudinger inequality, and find its extremal functions. Our results extend those of Wang-Ye (Adv. Math. 2012), Yang-Zhu ( Ann. Glob. Anal. Geom. 2016), Csat\'{o}- Roy…

Functional Analysis · Mathematics 2019-12-25 Songbo Hou

We derive exact formulae for three basic annulus crossing events for the critical planar Bernoulli percolation in the continuum limit. The first is for the probability that there is an open path connecting the two boundaries of an annulus…

Probability · Mathematics 2025-02-11 Xin Sun , Shengjing Xu , Zijie Zhuang

We study some approximation problems on a strict subset of the circle by analytic functions of the Hardy space H2 of the unit disk (in C), whose modulus satisfy a pointwise constraint on the complentary part of the circle. Existence and…

Functional Analysis · Mathematics 2009-11-10 Laurent Baratchart , Juliette Leblond , Fabien Seyfert

We provide an exact infinite power series solution that describes the trajectory of a nonlinear simple pendulum undergoing librating and rotating motion for all time. Although the series coefficients were previously given in [V. Fair\'en,…

Classical Analysis and ODEs · Mathematics 2021-08-25 W. Cade Reinberger , Morgan S. Holland , Nathaniel S. Barlow , Steven J. Weinstein

We introduce the notion of squeezing function corresponding to $d$-balanced domains motivated by the concept of generalized squeezing function given by Rong and Yang. In this work we study some of its properties and its relation with…

Complex Variables · Mathematics 2022-10-10 Naveen Gupta , Sanjay Kumar Pant

This note concerns the relationship between conditions on cost functions and domains and the convexity properties of potentials in optimal transportation and the continuity of the associated optimal mappings. In particular, we prove that if…

Analysis of PDEs · Mathematics 2007-05-23 Neil S. Trudnger , Xu-Jia Wang