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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 note on Talagrand’s transportation inequality and logarithmic Sobolev inequality

TL;DR: In this article, sufficient conditions for Talagrand's transportation information inequality and for the logarithmic Sobolev inequality were given for the case where the Bakry-Emery curvature is not lower bounded.
Journal ArticleDOI

Optimal Transport for Gaussian Mixture Models

TL;DR: An optimal mass transport framework on the space of Gaussian mixture models as a submanifold of probability densities equipped with the Wasserstein metric is introduced, which provides natural ways to compare, interpolate, and average Gaussia mixture models.
Journal ArticleDOI

Sharp geometric and functional inequalities in metric measure spaces with lower Ricci curvature bounds

TL;DR: For metric measure spaces satisfying the reduced curvature-dimension condition CD∗(K,N) as discussed by the authors, a series of sharp functional inequalities under the additional "essentially nonbranching" assumption were proved.
Posted Content

Certified dimension reduction in nonlinear Bayesian inverse problems

TL;DR: A dimension reduction technique for Bayesian inverse problems with nonlinear forward operators, non-Gaussian priors, and non- Gaussian observation noise is proposed and an analysis that enables control of the posterior approximation error due to this sampling is provided.
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Equivalent semigroup properties for the curvature-dimension condition

TL;DR: In this article, the curvature-dimension condition of the associated generator was used to derive the first eigenvalue, the log-Harnack inequality, the heat kernel estimates, and the HWI inequality for diffusion semigroups.
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.