Continuous mappings | Lipschitz maps | Metric geometry

Metric map

In the mathematical theory of metric spaces, a metric map is a function between metric spaces that does not increase any distance (such functions are always continuous).These maps are the morphisms in the category of metric spaces, Met (Isbell 1964).They are also called Lipschitz functions with Lipschitz constant 1, nonexpansive maps, nonexpanding maps, weak contractions, or short maps. Specifically, suppose that X and Y are metric spaces and ƒ is a function from X to Y. Thus we have a metric map when, for any points x and y in X, Here dX and dY denote the metrics on X and Y respectively. (Wikipedia).

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What is a metric space ?

Metric space definition and examples. Welcome to the beautiful world of topology and analysis! In this video, I present the important concept of a metric space, and give 10 examples. The idea of a metric space is to generalize the concept of absolute values and distances to sets more gener

From playlist Topology

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What is a metric space? An example

This is a basic introduction to the idea of a metric space. I introduce the idea of a metric and a metric space framed within the context of R^n. I show that a particular distance function satisfies the conditions of being a metric.

From playlist Mathematical analysis and applications

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Introduction to Metric Spaces

Introduction to Metric Spaces - Definition of a Metric. - The metric on R - The Euclidean Metric on R^n - A metric on the set of all bounded functions - The discrete metric

From playlist Topology

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Metric spaces -- Proofs

This lecture is on Introduction to Higher Mathematics (Proofs). For more see http://calculus123.com.

From playlist Proofs

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Introduction to Geometer's Sketchpad: Measurements

This video demonstrates some of the measurement and calculation features of Geometer's Sketchpad.

From playlist Geometer's Sketchpad

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Weird notions of "distance" || Intro to Metric Spaces

Visit https://brilliant.org/TreforBazett/ to get started learning STEM for free, and the first 200 people will get 20% off their annual premium subscription. Check out my MATH MERCH line in collaboration with Beautiful Equations ►https://www.beautifulequation.com/pages/trefor Weird, fun

From playlist Cool Math Series

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Metric Conversion Shortcut (Single Digit)

#shorts This video shows a shortcut for performing metric unit conversion with a given single digit. https://mathispower4u.com

From playlist Math Shorts

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Topology: Metric Spaces

This video is about metric spaces and some of their basic properties.

From playlist Basics: Topology

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Ex: Metric Conversions Using Unit Fractions - Length

This video provides three examples of how to perform metric conversions involving length using unit fractions. Site: http://mathispower4u.com Blog: http://mathispower4u.wordpress.com

From playlist Unit Conversions: Metric Units

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Guido Montúfar : Fisher information metric of the conditional probability politopes

Recording during the thematic meeting : "Geometrical and Topological Structures of Information" the September 01, 2017 at the Centre International de Rencontres Mathématiques (Marseille, France) Filmmaker: Guillaume Hennenfent

From playlist Geometry

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Lipschitz rigidity for scalar curvature - Bernhard Hanke

Analysis & Mathematical Physics Topic: Lipschitz rigidity for scalar curvature Speaker: Bernhard Hanke Affiliation: University of Augsburg, Member, School of Mathematics Date: October 05, 2022 Lower scalar curvature bounds on spin Riemannian manifolds exhibit remarkable rigidity properti

From playlist Mathematics

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Harmonic Maps between surfaces and Teichmuller theory (Lecture - 1) by Michael Wolf

Geometry, Groups and Dynamics (GGD) - 2017 DATE: 06 November 2017 to 24 November 2017 VENUE: Ramanujan Lecture Hall, ICTS, Bengaluru The program focuses on geometry, dynamical systems and group actions. Topics are chosen to cover the modern aspects of these areas in which research has b

From playlist Geometry, Groups and Dynamics (GGD) - 2017

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Johnathan Bush (11/5/21): Maps of Čech and Vietoris–Rips complexes into euclidean spaces

We say a continuous injective map from a topological space to k-dimensional euclidean space is simplex-preserving if the image of each set of at most k+1 distinct points is affinely independent. We will describe how simplex-preserving maps can be useful in the study of Čech and Vietoris–Ri

From playlist Vietoris-Rips Seminar

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Stefan Wenger - 21 September 2016

Wenger, Stefan "“Plateau’s problem in metric spaces and applications”"

From playlist A Mathematical Tribute to Ennio De Giorgi

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Henry Adams (10/11/17): Metric reconstruction via optimal transport

Given a sample of points X in a metric space M and a scale parameter r, the Vietoris-Rips simplicial complex VR(X;r) is a standard construction to attempt to recover M from X up to homotopy type. A deficiency of this approach is that VR(X;r) is not metrizable if it is not locally finite, a

From playlist AATRN 2017

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D. Stern - Harmonic map methods in spectral geometry (version temporaire)

Over the last fifty years, the problem of finding sharp upper bounds for area-normalized Laplacian eigenvalues on closed surfaces has attracted the attention of many geometers, due in part to connections to the study of sphere-valued harmonic maps and minimal immersions. In this talk, I'll

From playlist Ecole d'été 2021 - Curvature Constraints and Spaces of Metrics

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Johannes Ebert - Rigidity theorems for the diffeomorphism action on spaces of metrics of (...)

The diffeomorphism group $\mathrm{Diff}(M)$ of a closed manifold acts on the space $\mathcal{R}^+ (M)$ of positive scalar curvature metrics. For a basepoint $g$, we obtain an orbit map $\sigma_g: \mathrm{Diff}(M) \to \mathcal{R}^ (M)$ which induces a map $(\sigma_g)_*:\pi_*( \mathrm{Diff}(

From playlist Not Only Scalar Curvature Seminar

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Regularity of the limit set of embedded Poincaré Disks - Vincent Borelli

Workshop on the h-principle and beyond Topic: Regularity of the limit set of embedded Poincaré Disks Speaker: Vincent Borelli Affiliation: University of Lyon Date: November 4, 2021 Abstract: Let f be an embedding of a non compact manifold into an Euclidean space and p_n be a divergent se

From playlist Mathematics

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D. Stern - Harmonic map methods in spectral geometry

Over the last fifty years, the problem of finding sharp upper bounds for area-normalized Laplacian eigenvalues on closed surfaces has attracted the attention of many geometers, due in part to connections to the study of sphere-valued harmonic maps and minimal immersions. In this talk, I'll

From playlist Ecole d'été 2021 - Curvature Constraints and Spaces of Metrics

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The Maths of General Relativity (4/8) - Metric tensor

In this series, we build together the theory of general relativity. This fourth video focuses on the notion of metric tensor, its relations to the Christoffel symbols, and physical distances. For more videos, subscribe to the YouTube channel : https://www.youtube.com/ScienceClicEN And if

From playlist The Maths of General Relativity

Related pages

Morphism | Subcategory | Inverse function | Metric space | Hausdorff distance | Mathematics | Contraction mapping | Function (mathematics) | Degeneracy (mathematics) | Inequality (mathematics) | Lipschitz continuity | Isometry | Empty set | Continuous function | Category (mathematics) | Isomorphism | Category of metric spaces