Results 101 to 110 of about 469,360 (206)

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  

An isoperimetric inequality [PDF]

open access: yesProceedings of the American Mathematical Society, 1964
openaire   +2 more sources

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  

The Sharp Quantitative Isoperimetric Inequality

open access: yes, 2006
A quantitative sharp form of the classical isoperimetric inequality is proved, thus giving a positive answer to a conjecture by ...
Pratelli, Aldo   +2 more
core  

The isoperimetric inequality and Q-curvature

open access: yesAdvances in Mathematics, 2015
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +1 more source

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  

A note on the Faber-Krahn inequality

open access: yesLe Matematiche, 1998
In this work we study the well known Faber-Krahn  inequality for planar domains. Let u>0 be the first eigenfunction of the Laplacian on a bounded domain and λ_1 be the first eigenvalue. Let λ^∗_1  be the first eigenvalue for the symmetrized domain.
Tilak Bhattacharya
doaj  

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

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

A note on the Serrin problem in the plane

open access: yesLe Matematiche, 2008
We investigate the stability of the radial symmetry for the overdetermined Serrin problem in a planar convex set. More precisely, we prove that, whenever we properly perturb both the boundary conditions and the data, then a convex solution is “close” to ...
Barbara Brandolini   +3 more
doaj  

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