Results 101 to 110 of about 1,599 (218)

Two bounds on the noncommuting graph

open access: yesOpen Mathematics, 2015
Erdős introduced the noncommuting graph in order to study the number of commuting elements in a finite group. Despite the use of combinatorial ideas, his methods involved several techniques of classical analysis.
Nardulli Stefano, Russo Francesco G.
doaj   +1 more source

Relative Isoperimetric Inequality for Domains Outside a Convex Set

open access: yes
Given a convex set C R and a set D R C, the inequality is called the relative isoperimetric inequality. We prove this inequality in three cases: i) when C and D are symmetric about n 1 mutually orthogonal vertical hyperplanes and @D ...
The Inequality   +2 more
core  

The Isoperimetric Inequality: Proofs by Convex and Differential Geometry

open access: yes, 2020
The Isoperimetric Inequality has many different proofs using methods from diverse mathematical fields. In the paper, two methods to prove this inequality will be shown and compared.
Gehring, Penelope
core  

A strong form of the quantitative isoperimetric inequality

open access: yes, 2014
. We give a refinement of the quantitative isoperimetric inequality. We prove that the isoperimetric gap controls not only the Fraenkel asymmetry but also the oscillation of the ...
Nicola Fusco   +3 more
core   +1 more source

Isoperimetric inequality fortorsional rigidity in the complex plane

open access: yesJournal of Inequalities and Applications, 2001
Suppose SZ is a simply connected domain in the complex plane. In (F.G. Avhadiev, Matem. Sborn., 189(12) (1998), 3–12 (Russian)), Avhadiev introduced new geometrical functionals, which give two-sided estimates for the torsional rigidity of .
Salahudinov RG
doaj  

A weighted isoperimetric inequality and applications to symmetrization

open access: yesJournal of Inequalities and Applications, 1999
We prove an inequality of the form , where is a bounded domain in with smooth boundary, is a ball centered in the origin having the same measure as . From this we derive inequalities comparing a weighted Sobolev norm of a given function with the norm
Brock F   +3 more
doaj  

On the stability of Almgren's isoperimetric inequality

open access: yes, 2013
We establish a quantitative isoperimetric inequality in higher codimension. In particular, we prove that for any closed (n-1)-dimensional manifold \Gamma in \R^{n+k} the following inequality $$D(\Gamma)\ge C d^2(\Gamma)$$ holds true.
FUSCO, NICOLA
core  

The isoperimetric inequality for nonsimple closed curves

open access: yes, 1993
The main purpose of this paper is the generalization to the hyperbolic and elliptic spaces of the isoperimetric inequality of Banchoff and Pohl (J. Differential Geom. 6 (1971), 175-192).
Liliana M. Gysin
core   +1 more source

Space-time integral currents of bounded variation. [PDF]

open access: yesCalc Var Partial Differ Equ, 2023
Rindler F.
europepmc   +1 more source

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