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Quasiconformal maps in metric spaces with controlled geometry

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TLDR
The theory of quasiconformal maps in metric spaces that satisfy certain bounds on their mass and geometry has been studied in this article, and the main message is that such a theory is both relevant and viable.
Abstract
This paper develops the foundations of the theory of quasiconformal maps in metric spaces that satisfy certain bounds on their mass and geometry. The principal message is that such a theory is both relevant and viable. The first main issue is the problem of definition, which we next describe. Quasiconformal maps are commonly understood as homeomorphisms that distort the shape of infinitesimal balls by a uniformly bounded amount. This requirement makes sense in every metric space. Given a homeomorphism f from a metric space X to a metric space Y , then for x∈X and r>0 set

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Book

Optimal Transport: Old and New

TL;DR: In this paper, the authors provide a detailed description of the basic properties of optimal transport, including cyclical monotonicity and Kantorovich duality, and three examples of coupling techniques.
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Gradient Flows: In Metric Spaces and in the Space of Probability Measures

TL;DR: In this article, Gradient flows and curves of Maximal slopes of the Wasserstein distance along geodesics are used to measure the optimal transportation problem in the space of probability measures.
Journal ArticleDOI

Differentiability of Lipschitz Functions on Metric Measure Spaces

TL;DR: In this paper, the authors propose a method to solve the problem of the problem: without abstracts, without abstractions, without Abstracts. (Without Abstract) (without Abstract)
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Sobolev met Poincaré

TL;DR: In this article, the Poincare and Sobolev inequalities, pointwise estimates, and pointwise classifications of Soboleve classes are discussed. But they do not cover the necessary conditions for Poincarse inequalities.
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Sobolev Spaces on Metric Measure Spaces: An Approach Based on Upper Gradients

TL;DR: In this paper, the authors provide a unified treatment of first-order analysis in diverse and potentially nonsmooth settings, focusing on vector-valued Sobolev spaces, and show the geometric implications of the critical Poincare inequality.
References
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Elliptic Partial Differential Equations of Second Order

TL;DR: In this article, Leray-Schauder and Harnack this article considered the Dirichlet Problem for Poisson's Equation and showed that it is a special case of Divergence Form Operators.
Book

Real and complex analysis

Walter Rudin
TL;DR: In this paper, the Riesz representation theorem is used to describe the regularity properties of Borel measures and their relation to the Radon-Nikodym theorem of continuous functions.
Book

Singular Integrals and Differentiability Properties of Functions.

TL;DR: Stein's seminal work Real Analysis as mentioned in this paper is considered the most influential mathematics text in the last thirty-five years and has been widely used as a reference for many applications in the field of analysis.
Book

Harmonic Analysis: Real-variable Methods, Orthogonality, and Oscillatory Integrals

TL;DR: In this article, the authors introduce the Heisenberg group and describe the Maximal Operators and Maximal Averages and Oscillatory Integral Integrals of the First and Second Kind.
Book

Geometric Measure Theory

TL;DR: In this article, Grassmann algebras of a vectorspace have been studied in the context of the calculus of variations, and a glossary of some standard notations has been provided.