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Open AccessJournal ArticleDOI

Generalization of an Inequality by Talagrand and Links with the Logarithmic Sobolev Inequality

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TLDR
In this paper, it was shown that transport inequalities, similar to the one derived by M. Talagrand (1996, Geom. Funct. Anal. 6, 587-600) for the Gaussian measure, are implied by logarithmic Sobolev inequalities.
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Complete logarithmic Sobolev inequalities via Ricci curvature bounded below

TL;DR: In this paper , it was shown that for a symmetric Markov semigroup, Ricci curvature bounded from below by a non-positive constant combined with a finite L∞-mixing time implies the modified log-Sobolev inequality.
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Logarithmic Sobolev inequalities for Moebius measures on spheres

TL;DR: In this article, the optimal Poincaré constant is not greater than 2 n - 2 (n ≥ 3 {n\\geq 3} ) and the optimal logarithmic Sobolev constant is strictly stronger than L 2 {L^{2}} -transportation-information inequalities.
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Dimensional contraction via Markov transportation distance

TL;DR: In this paper, it was shown that curvature conditions a la Bakry-Emery are equivalent to contraction properties of the heat semigroup with respect to the classical quadratic Wasserstein distance.
Dissertation

Le problème de Schrödinger et ses liens avec le transport optimal et les inégalités fonctionnelles

Luigia Ripani
TL;DR: In this article, the authors consider the problem of minimization of the entropy of the flux de chaleur in the context of diffusion and show how to solve it using the theory of the transport optimal.
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Instability Results for the Logarithmic Sobolev Inequality and its Application to the Beckner--Hirschman Inequality

TL;DR: In this paper, the stability bounds for the logarithmic Sobolev inequality with respect to probability measures with bounded second moments are shown to be the best possible for any probability measure.
References
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Book

Measure theory and fine properties of functions

TL;DR: In this article, the authors define and define elementary properties of BV functions, including the following: Sobolev Inequalities Compactness Capacity Quasicontinuity Precise Representations of Soboleve Functions Differentiability on Lines BV Function Differentiability and Structure Theorem Approximation and Compactness Traces Extensions Coarea Formula for BV Functions isoperimetric inequalities The Reduced Boundary The Measure Theoretic Boundary Gauss-Green Theorem Pointwise Properties this article.
Journal ArticleDOI

Polar Factorization and Monotone Rearrangement of Vector-Valued Functions

TL;DR: In this paper, it was shown that for every vector-valued function u Lp(X, p; Rd) there is a unique polar factorization u = V$.s, where $ is a convex function defined on R and s is a measure-preserving mapping from (x, p) into (Q, I. I), provided that u is nondegenerate.
Journal ArticleDOI

The geometry of dissipative evolution equations: the porous medium equation

TL;DR: In this paper, the authors show that the porous medium equation has a gradient flow structure which is both physically and mathematically natural, and they use the intuition and the calculus of Riemannian geometry to quantify this asymptotic behavior.
Book

Topological methods in hydrodynamics

TL;DR: A group theoretical approach to hydrodynamics is proposed in this article, where the authors consider the hydrodynamic geometry of diffeomorphism groups and the principle of least action implies that the motion of a fluid is described by geodesics on the group in the right-invariant Riemannian metric given by the kinetic energy.
Journal ArticleDOI

The variational formulation of the Fokker-Planck equation

TL;DR: The Fokker-Planck equation as mentioned in this paper describes the evolution of the probability density for a stochastic process associated with an Ito Stochastic Differential Equation.