Group actions (mathematics) | Algebraic topology
In mathematics, and especially in homotopy theory, a crossed module consists of groups G and H, where G acts on H by automorphisms (which we will write on the left, , and a homomorphism of groups that is equivariant with respect to the conjugation action of G on itself: and also satisfies the so-called : (Wikipedia).
The vector cross-product is another form of vector multiplication and results in another vector. In this tutorial I show you a simple way of calculating the cross product of two vectors.
From playlist Introducing linear algebra
Ex 2: Properties of Cross Products - Cross Product of a Sum and Difference
This video explains how to find the cross product of a sum and difference of two vectors. Site: http://mathispower4u.com
From playlist Vectors in Space (3D)
Multivariable Calculus: Cross Product
In this video we explore how to compute the cross product of two vectors using determinants.
From playlist Multivariable Calculus
What is the cross product of two vectors? How is it useful? Free ebook https://bookboon.com/en/introduction-to-vectors-ebook (updated link) Test your understanding via a short quiz http://goo.gl/forms/Ii3hPtwksX
From playlist Introduction to Vectors
A mathematics bonus. In this lecture I remind you of a way to calculate the cross product of two vector using the determinant of a matrix along the first row of unit vectors.
From playlist Physics ONE
0:00 1:32 Notation for tensor products 3:20 Defining tensor product via universal property 5:35 Proof of uniqueness 11:55 Construction of tensor products by generators and relations 17:30 Theorem: the construction satisfies the universal property 20:45 Proof of the theorem 32:24 Tensors a
From playlist Abstract Algebra 2
Lecture 27. Properties of tensor products
0:00 Use properties of tensor products to effectively think about them! 0:50 Tensor product is symmetric 1:17 Tensor product is associative 1:42 Tensor product is additive 21:40 Corollaries 24:03 Generators in a tensor product 25:30 Tensor product of f.g. modules is itself f.g. 32:05 Tenso
From playlist Abstract Algebra 2
Stefaan Vaes: Cohomology and L2-Betti numbers for subfactors and quasi-regular inclusions
Find this video and other talks given by worldwide mathematicians on CIRM's Audiovisual Mathematics Library: http://library.cirm-math.fr. And discover all its functionalities: - Chapter markers and keywords to watch the parts of your choice in the video - Videos enriched with abstracts, b
From playlist Analysis and its Applications
Building Cross Platform PowerShell Modules by Adam Driscoll
Building Cross Platform PowerShell Modules by Adam Driscoll This session will be a deep dive into the steps necessary to develop, package and distribute a cross platform binary PowerShell module that runs on Windows PowerShell and PowerShell Core.
From playlist PowerShell + DevOps Global Summit 2018
Building Cross Platform PowerShell Modules by Adam Driscoll
This session will be a deep dive into the steps necessary to develop, package and distribute a cross platform binary PowerShell module that runs on Windows PowerShell and PowerShell Core.
From playlist PowerShell + DevOps Global Summit 2018
An introduction to group (and Galois) cohomology (part 1)
This is part 1 of an introduction to group (and Galois) cohomology, with a particular emphasis on the applications to the cohomology of fields, and elliptic curves.
From playlist An Introduction to the Arithmetic of Elliptic Curves
From playlist Abstract Algebra 2
DEFCON 16: Grendel-Scan: A new web application scanning tool
Speakers: David Byrne, Security Consultant, Trustwave Eric Duprey, Senior Security Engineer, Dish Network While commercial web application scanners have been available for quite a while, the selection of open source tools has been limited. Grendel-Scan is a new tool that aims to provide
From playlist DEFCON 16
Eugene Gorsky - Algebra and Geometry of Link Homology 1/5
Khovanov and Rozansky defined a link homology theory which categorifies the HOMFLY-PT polynomial. This homology is relatively easy to define, but notoriously hard to compute. I will discuss recent breakthroughs in understanding and computing Khovanov-Rozansky homology, focusing on connecti
From playlist 2021 IHES Summer School - Enumerative Geometry, Physics and Representation Theory
Cross product differentiation example
Free ebook http://tinyurl.com/EngMathYT How to differentiate a cross product of vector valued functions of one variable.
From playlist Engineering Mathematics
Lecture 29. Symmetric and exterior powers
From playlist Abstract Algebra 2