Random matrices

Euclidean random matrix

Within mathematics, an N×N Euclidean random matrix  is defined with the help of an arbitrary deterministic function f(r, r′) and of N points {ri} randomly distributed in a region V of d-dimensional Euclidean space. The element Aij of the matrix is equal to f(ri, rj): Aij = f(ri, rj). (Wikipedia).

Euclidean random matrix
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Matrix addition

How do we add matrices. A matrix is an abstract object that exists in its own right, and in this sense, it is similar to a natural number, or a complex number, or even a polynomial. Each element in a matrix has an address by way of the row in which it is and the column in which it is. Y

From playlist Introducing linear algebra

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Matrix of a matrix

Calculating the matrix of a linear transformation with respect to a basis B. Here is the case where the input basis is the same as the output basis. Check out my Vector Space playlist: https://www.youtube.com/watch?v=mU7DHh6KNzI&list=PLJb1qAQIrmmClZt_Jr192Dc_5I2J3vtYB Subscribe to my ch

From playlist Linear Transformations

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Column space of a matrix

We have already looked at the column view of a matrix. In this video lecture I want to expand on this topic to show you that each matrix has a column space. If a matrix is part of a linear system then a linear combination of the columns creates a column space. The vector created by the

From playlist Introducing linear algebra

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Linear Algebra for Computer Scientists. 12. Introducing the Matrix

This computer science video is one of a series of lessons about linear algebra for computer scientists. This video introduces the concept of a matrix. A matrix is a rectangular or square, two dimensional array of numbers, symbols, or expressions. A matrix is also classed a second order

From playlist Linear Algebra for Computer Scientists

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Matrix Addition, Subtraction, and Scalar Multiplication

This video shows how to add, subtract and perform scalar multiplication with matrices. http://mathispower4u.yolasite.com/ http://mathispower4u.wordpress.com/

From playlist Introduction to Matrices and Matrix Operations

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Understanding Matrices and Matrix Notation

In order to do linear algebra, we will have to know how to use matrices. So what's a matrix? It's just an array of numbers listed in a grid of particular dimensions that can represent the coefficients and constants from a system of linear equations. They're fun, I promise! Let's just start

From playlist Mathematics (All Of It)

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Concentration of Measure on the Compact Classical Matrix Groups - Elizabeth Meckes

Elizabeth Meckes Case Western Reserve Univ May 20, 2014 For more videos, visit http://video.ias.edu

From playlist Mathematics

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What is a Matrix?

What is a matrix? Free ebook http://tinyurl.com/EngMathYT

From playlist Intro to Matrices

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Pierre Youssef: Outliers in sparse Wigner matrices

Given a Wigner matrix with centered bounded entries, we study the effect of sparsity on the extreme eigenvalues. More precisely, multiplying the entries by independent Bernoulli variables with parameter pn, we show that as pn decreases, outliers start emerging in the semi-circular law whic

From playlist Workshop: High dimensional measures: geometric and probabilistic aspects

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Partitioned matrices

What's a partitioned matrix, and how does it relate to linear systems of equations?

From playlist Linear Algebra

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Guillaume Aubrun: Asymptotic tensor powers of Banach spaces

HYBRID EVENT Recorded during the meeting "Randoms Tensors and Related Topics" the March 14, 2022 by the Centre International de Rencontres Mathématiques (Marseille, France) Filmmaker: Guillaume Hennenfent Find this video and other talks given by worldwide mathematicians on CIRM's Audio

From playlist Analysis and its Applications

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Discrete Math - 2.6.1 Matrices and Matrix Operations

Characteristics of a matrix, finding the sum, product and transpose of a matrix. Identity matrix is also introduced. Textbook: Rosen, Discrete Mathematics and Its Applications, 7e Playlist: https://www.youtube.com/playlist?list=PLl-gb0E4MII28GykmtuBXNUNoej-vY5Rz

From playlist Discrete Math I (Entire Course)

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Percolation on Nonamenable Groups, Old And New (Lecture-4) by Tom Hutchcroft

PROGRAM: PROBABILISTIC METHODS IN NEGATIVE CURVATURE (ONLINE) ORGANIZERS: Riddhipratim Basu (ICTS - TIFR, Bengaluru), Anish Ghosh (TIFR, Mumbai) and Mahan M J (TIFR, Mumbai) DATE & TIME: 01 March 2021 to 12 March 2021 VENUE: Online Due to the ongoing COVID pandemic, the meeting will

From playlist Probabilistic Methods in Negative Curvature (Online)

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Matrix liberation process - Y. Ueda - Workshop 2 - CEB T3 2017

Yoshimichi Ueda / 24.10.17 Matrix liberation process We introduce a natural random matrix counterpart of the so-called liberation process introduced by Voiculescu in the framework of free probability, and consider its possible LDP in the large N limit. ---------------------------------

From playlist 2017 - T3 - Analysis in Quantum Information Theory - CEB Trimester

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Anna Wienhard (7/29/22): Graph Embeddings in Symmetric Spaces

Abstract: Learning faithful graph representations has become a fundamental intermediary step in a wide range of machine learning applications. We propose the systematic use of symmetric spaces as embedding targets. We use Finsler metrics integrated in a Riemannian optimization scheme, that

From playlist Applied Geometry for Data Sciences 2022

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Joscha Prochno: The large deviations approach to high-dimensional convex bodies, lecture III

Given any isotropic convex body in high dimension, it is known that its typical random projections will be approximately standard Gaussian. The universality in this central limit perspective restricts the information that can be retrieved from the lower-dimensional projections. In contrast

From playlist Workshop: High dimensional spatial random systems

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Barbara Giunti (4/29/21): Average complexity of barcode computation for Vietoris-Rips filtrations

In this talk, we present the first theoretical study of the algorithmic complexity of computing the persistent homology of random Vietoris-Rips filtration. Specifically, we prove upper bounds for the average fill-up (number of non-zero entries) of the boundary matrix after matrix reduction

From playlist Vietoris-Rips Seminar

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Example of Skew-Symmetric Matrix

Matrix Theory: Let a be an invertible skew-symmetric matrix of size n. Show that n is even, and then show that A^{-1} is also skew-symmetric. We show the identities (AB)^T = B^T A^T and (AB)^{-1} = B^{-1}A^{-1}.

From playlist Matrix Theory

Related pages

Complex number | Marchenko–Pastur distribution | Mathematics | Real number | Euclidean space | Hermitian matrix | Euclidean distance matrix