Results 11 to 20 of about 1,372 (214)

Sobolev type inequalities for compact metric graphs [PDF]

open access: yesJournal of Inequalities and Applications, 2018
In this paper analogues of Sobolev inequalities for compact and connected metric graphs are derived. As a consequence of these inequalities, a lower bound, commonly known as Cheeger inequality, on the first non-zero eigenvalue of the Laplace operator ...
Muhammad Usman
doaj   +2 more sources

Isoperimetric inequalities for some nonlinear eigenvalue problems [PDF]

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2004
In this paper we intend to review many of the known inequalities for eigenvalues of the Laplacian in Euclidean plane. Our aim is to show that we can generalize some results for the pseudo-Laplacian.
Gabriella Bognár
doaj   +2 more sources

Isoperimetric inequalities for conformal moments of plane domains [PDF]

open access: yesJournal of Inequalities and Applications, 2002
We prove a new sharp inequality for norms in weighted Bergman space. This inequality is then used to derive isoperimetric inequalities for geometric functionals which are closely related to the torsional rigidity of a simply connected domain (F.
Avkhadiev FG, Salahudinov RG
doaj   +1 more source

On an isoperimetric-isodiametric inequality [PDF]

open access: yesAnalysis & PDE, 2017
Final version to appear in Analysis & PDE.
Andrea Mondino, Emanuele Spadaro
openaire   +5 more sources

Isoperimetric inequalities in Riemann surfaces and graphs

open access: yes, 2021
A celebrated theorem of Kanai states that quasi-isometries preserve isoperimetric inequalities between uniform Riemannian manifolds (with positive injectivity radius) and graphs.
Martínez Pérez, Álvaro   +2 more
core   +1 more source

An Asymptotic Isoperimetric Inequality [PDF]

open access: yesGeometric And Functional Analysis, 1998
For a finite metric space \(V\) with a metric \(\rho\) and probability measure \(\mu\), let \(V^n\) be the product metric space in which the distance between \(a= (a_1,\dots, a_n)\) and \(b= (b_1,\dots, b_n)\) is \(\rho_n(a,b)= \sum_i\rho(a_i, b_i)\) and the measure \(\mu_n(a_1,\dots, a_n)= \prod_i\mu(a_i)\). For any \(d\geq 0\) the \(d\)-neighbourhood
Alon, N., Boppana, R., Spencer, J.
openaire   +2 more sources

Sharp isoperimetric and Sobolev inequalities in spaces with nonnegative Ricci curvature

open access: yes, 2022
By using optimal mass transport theory we prove a sharp isoperimetric inequality in CD(0,N) metric measure spaces assuming an asymptotic volume growth at infinity.
Kristály, Alexandru, Balogh, Zoltán M.
core   +1 more source

Isoperimetric and Functional Inequalities

open access: yesМоделирование и анализ информационных систем, 2018
We establish lower estimates for an integral functional$$\int\limits_\Omega f(u(x), \nabla u(x)) \, dx ,$$where \(\Omega\) -- a bounded domain in \(\mathbb{R}^n \; (n \geqslant 2)\), an integrand \(f(t,p) \, (t \in [0, \infty),\; p \in \mathbb{R}^n)\) --
Vladimir S. Klimov
doaj   +1 more source

A sharp reverse Bonnesen-style inequality and generalization

open access: yesJournal of Inequalities and Applications, 2019
We investigate the isoperimetric deficit of the oval domain in the Euclidean plane. Via the kinematic formulae of Poincaré and Blaschke, and Blaschke’s rolling theorem, we obtain a sharp reverse Bonnesen-style inequality for a plane oval domain, which ...
Pengfu Wang
doaj   +1 more source

Exact bounds for tail probabilities of martingales with bounded differences

open access: yesLietuvos Matematikos Rinkinys, 2009
We consider random walks, say Wn = {0, M1, . . ., Mn} of length n starting at 0 and based on a martingale sequence Mk = X1 + ··· + Xk with differences Xm. Assuming |Xk| \leq 1 we solve the isoperimetric problem Bn(x) = supP\{Wn visits an interval [x,∞
Dainius Dzindzalieta
doaj   +1 more source

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