English
Related papers

Related papers: Isoperimetric Inequalities Made Simpler

200 papers

We study quantitative isoperimetric inequalities for two different perimeter-type functionals. We first consider classical capillarity functionals, which measure the perimeter of sets in a Euclidean half-space, assigning a constant weight…

Differential Geometry · Mathematics 2025-07-22 Davide Carazzato , Giulio Pascale , Marco Pozzetta

We prove a sharp quantitative version of Hales' isoperimetric honeycomb theorem by exploiting a quantitative isoperimetric inequality for polygons and an improved convergence theorem for planar bubble clusters. Further applications include…

Analysis of PDEs · Mathematics 2014-10-23 Marco Caroccia , Francesco Maggi

An elliptic divisibility sequence, generated by a point in the image of a rational isogeny, is shown to possess a uniformly bounded number of prime terms. This result applies over the rational numbers, assuming Lang's conjecture, and over…

Number Theory · Mathematics 2015-05-13 Graham Everest , Patrick Ingram , Valery Mahe , Shaun Stevens

We prove a relative isoperimetric inequality in the plane, when the perimeter is defined with respect to a convex, positively homogeneous function of degree one, and characterize the minimizers.

Analysis of PDEs · Mathematics 2014-01-28 Francesco Della Pietra , Nunzia Gavitone

We prove the sharp quantitative stability for a wide class of weighted isoperimetric inequalities. More precisely, we consider isoperimetric inequalities in convex cones with homogeneous weights. Inspired by the proof of such isoperimetric…

Analysis of PDEs · Mathematics 2020-06-25 Eleonora Cinti , Federico Glaudo , Aldo Pratelli , Xavier Ros-Oton , Joaquim Serra

We address a special case of a conjecture of M. Talagrand relating two notions of "threshold" for an increasing family $\mathcal F$ of subsets of a finite set $V$. The full conjecture implies equivalence of the "Fractional…

Combinatorics · Mathematics 2021-05-25 Keith Frankston , Jeff Kahn , Jinyoung Park

For the purposes of this paper supercongruences are congruences between terminating hypergeometric series and quotients of $p$-adic Gamma functions that are stronger than those one can expect to prove using commutative formal group laws. We…

Number Theory · Mathematics 2014-09-04 Ling Long , Ravi Ramakrishna

In this paper we prove an isoperimetric inequality for holomorphic functions in the unit polydisc $\mathbf U^n$. As a corollary we derive an inclusion relation between weighted Bergman and Hardy spaces of holomorphic functions in the…

Complex Variables · Mathematics 2014-03-04 Marijan Markovic

In this paper we give a proof of an epiperimetric inequality in the setting of the lower dimensional obstacle problem. The inequality was introduced by Weiss (Invent. Math., 138 (1999), no. 1, 23-50) for the classical obstacle problem and…

Analysis of PDEs · Mathematics 2017-09-05 Francesco Geraci

We consider capillarity functionals which measure the perimeter of sets contained in a Euclidean half-space assigning a constant weight $\lambda \in (-1,1)$ to the portion of the boundary that touches the boundary of the half-space.…

Analysis of PDEs · Mathematics 2024-10-01 Giulio Pascale , Marco Pozzetta

We extend three related results from the analysis of influences of Boolean functions to the quantum setting, namely the KKL Theorem, Friedgut's Junta Theorem and Talagrand's variance inequality for geometric influences. Our results are…

Functional Analysis · Mathematics 2024-04-05 Cambyse Rouzé , Melchior Wirth , Haonan Zhang

We prove a vertex isoperimetric inequality for the $n$-dimensional Hamming ball $\mathcal{B}_n(R)$ of radius $R$. The isoperimetric inequality is sharp up to a constant factor for sets that are comparable to $\mathcal{B}_n(R)$ in size. A…

Combinatorics · Mathematics 2022-02-10 Zilin Jiang , Amir Yehudayoff

We investigate isoperimetric constants of infinite tessellating metric graphs. We introduce a curvature-like quantity, which plays the role of a metric graph analogue of discrete curvature notions for combinatorial tessellating graphs. We…

Metric Geometry · Mathematics 2018-06-27 Noema Nicolussi

We prove an epiperimetric inequality for the thin obstacle problem, extending the pioneering results by Weiss on the classical obstacle problem (Invent. Math. 138 (1999), no. 1, 23-50). This inequality provides the means to study the rate…

Analysis of PDEs · Mathematics 2015-02-27 Matteo Focardi , Emanuele Spadaro

We prove that $L^2$ weak solutions to hypoelliptic equations with bounded measurable coefficients are H\"older continuous. The proof relies on classical techniques developed by De Giorgi and Moser together with the averaging lemma and…

Analysis of PDEs · Mathematics 2015-06-22 Cyril Imbert , Clément Mouhot

A sharp isoperimetric inequality for the Hamming cube is proved at the critical exponent $\beta=\frac12$. This follows up on previous work, where such bounds were established for $\beta$ near $\frac12$. As a consequence, this result settles…

Classical Analysis and ODEs · Mathematics 2026-02-25 Polona Durcik , Paata Ivanisvili , Joris Roos , Xinyuan Xie

We prove a vertex-isoperimetric inequality for [n]^(r), the set of all r-element subsets of {1,2,...,n}, where x,y \in [n]^(r) are adjacent if |x \Delta y|=2. Namely, if \mathcal{A} \subset [n]^(r) with |\mathcal{A}|=\alpha {n \choose r},…

Combinatorics · Mathematics 2012-03-19 Demetres Christofides , David Ellis , Peter Keevash

We show that certain statements related to the Fourier-Walsh expansion of functions with respect to a biased measure on the discrete cube can be deduced from the respective results for the uniform measure by a simple reduction. In…

Combinatorics · Mathematics 2010-11-25 Nathan Keller

It is shown that every even, zonal measure on the Euclidean unit sphere gives rise to an isoperimetric inequality for sets of finite perimeter which directly implies the classical Euclidean isoperimetric inequality. The strongest member of…

Metric Geometry · Mathematics 2018-05-01 Christoph Haberl , Franz E. Schuster

We provide a simple criterion on a family of functions that implies a square function estimate on $L^p$ for every even integer $p \geq 2$. This defines a new type of superorthogonality that is verified by checking a less restrictive…

Classical Analysis and ODEs · Mathematics 2025-01-24 Philip T. Gressman , Lillian B. Pierce , Joris Roos , Po-Lam Yung