In mathematics, an orthogonal symmetric Lie algebra is a pair consisting of a real Lie algebra and an automorphism of of order such that the eigenspace of s corresponding to 1 (i.e., the set of fixed points) is a compact subalgebra. If "compactness" is omitted, it is called a symmetric Lie algebra. An orthogonal symmetric Lie algebra is said to be effective if intersects the center of trivially. In practice, effectiveness is often assumed; we do this in this article as well. The canonical example is the Lie algebra of a symmetric space, being the differential of a symmetry. Let be effective orthogonal symmetric Lie algebra, and let denotes the -1 eigenspace of . We say that is of compact type if is compact and semisimple. If instead it is noncompact, semisimple, and if is a Cartan decomposition, then is of noncompact type. If is an Abelian ideal of , then is said to be of Euclidean type. Every effective, orthogonal symmetric Lie algebra decomposes into a direct sum of ideals , and , each invariant under and orthogonal with respect to the Killing form of , and such that if , and denote the restriction of to , and , respectively, then , and are effective orthogonal symmetric Lie algebras of Euclidean type, compact type and noncompact type. (Wikipedia).
11H Orthogonal Projection of a Vector
The orthogonal projection of one vector along another.
From playlist Linear Algebra
11J Orthogonal Projection of a Vector
The orthogonal projection of one vector along another.
From playlist Linear Algebra
In this video I write down the axioms of Lie algebras and then discuss the defining anti-symmetric bilinear map (the Lie bracket) which is zero on the diagonal and fulfills the Jacobi identity. I'm following the compact book "Introduction to Lie Algebras" by Erdmann and Wildon. https://gi
From playlist Algebra
Linear Algebra 7.2 Orthogonal Diagonalization
My notes are available at http://asherbroberts.com/ (so you can write along with me). Elementary Linear Algebra: Applications Version 12th Edition by Howard Anton, Chris Rorres, and Anton Kaul A. Roberts is supported in part by the grants NSF CAREER 1653602 and NSF DMS 2153803.
From playlist Linear Algebra
The Lie-algebra of Quaternion algebras and their Lie-subalgebras
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From playlist Algebra
Linear Algebra 7.1 Orthogonal Matrices
My notes are available at http://asherbroberts.com/ (so you can write along with me). Elementary Linear Algebra: Applications Version 12th Edition by Howard Anton, Chris Rorres, and Anton Kaul A. Roberts is supported in part by the grants NSF CAREER 1653602 and NSF DMS 2153803.
From playlist Linear Algebra
Orthogonal complements. The direct sum of a subspace and its orthogonal complement. Dimension of the orthogonal complement. The orthogonal complement of the orthogonal complement.
From playlist Linear Algebra Done Right
11I Orthogonal Projection of a Vector
The Orthogonal Projection of one vector along another.
From playlist Linear Algebra
Eigenvectors of Symmetric Matrices Are Orthogonal
https://bit.ly/PavelPatreon https://lem.ma/LA - Linear Algebra on Lemma http://bit.ly/ITCYTNew - Dr. Grinfeld's Tensor Calculus textbook https://lem.ma/prep - Complete SAT Math Prep
From playlist Part 4 Linear Algebra: Inner Products
Lie Groups and Lie Algebras: Lesson 11 - The Classical Groups Part IX
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From playlist Lie Groups and Lie Algebras
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From playlist École d'Été 2022 - Cohomology Geometry and Explicit Number Theory
Lie Groups and Lie Algebras: Lesson 12 - The Classical Groups Part X (redux)
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From playlist Lie Groups and Lie Algebras
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From playlist Maryland Analysis and Geometry Atelier
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From playlist Introduction to Tensor Calculus
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From playlist Linear Algebra
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From playlist Moduli Of Bundles And Related Structures 2020