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Open AccessJournal ArticleDOI

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

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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A stochastic model of grain boundary dynamics: A Fokker–Planck perspective

TL;DR: In this article , the authors derived a Fokker-planck model for the evolution of the planar grain boundary network, which considers anisotropic grain boundary energy which depends on lattice misorientation and takes into account mobility of the triple junctions, as well as independent dynamics of the misorientations.
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A Link Between the Log-Sobolev Inequality and Lyapunov Condition

TL;DR: In this article, the authors give an alternative look at the log-Sobolev inequality (LSI) for log-concave measures by semigroup tools, and show that the Lyapunov condition can be derived from LSI, which means their equivalence.
Posted Content

Logarithmic Sobolev inequality for diffusion semigroups

TL;DR: Through the main example of the Ornstein-Uhlenbeck semigroup, the Bakry-Emery criterion is presented as a main tool to get functional inequalities as Poincar\'e or logarithmic Sobolev inequalities.
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On some functional inequalities for skew Brownian motion

TL;DR: In this paper, the Poincare and logarithmic Sobolev inequalities for skew Brownian diffusion with singular drift have been studied, and it turns out that the estimates depend on the local time of the process.
Journal ArticleDOI

Radon-Sobolev Variational Auto-Encoders.

TL;DR: In this article, the Radon-Sobolev Variational Auto-Encoder (RS-VAE) was proposed to solve the problem of convexity of the Wasserstein distance.
References
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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.
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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.