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The Classical Lie algebras are more simple than they may appear

The purpose of this dissertation is to consider the classical Lie Algebras, namely: so(n, C), sl(n, C) and sp(n, C), n ≥ 2. Our aim will be to prove that if a Lie Algebra L is classical, except for so(2, C) and so(4, C), then it is simple. The classification and analysis will include finding their r...

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Main Author: Brache, Chad
Other Authors: Blackman, Claire
Format: Thesis
Language:English
Published: Department of Mathematics and Applied Mathematics 2021
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access_status_str Open Access
author Brache, Chad
author2 Blackman, Claire
author_browse Blackman, Claire
Brache, Chad
author_facet Blackman, Claire
Brache, Chad
author_sort Brache, Chad
collection Thesis
description The purpose of this dissertation is to consider the classical Lie Algebras, namely: so(n, C), sl(n, C) and sp(n, C), n ≥ 2. Our aim will be to prove that if a Lie Algebra L is classical, except for so(2, C) and so(4, C), then it is simple. The classification and analysis will include finding their root systems and the associated Dynkin diagrams. The phrase it's the journey that teaches you a lot about your destination applies quite well here, as the bulk of our discussion will be assembling the tools necessary for proving simplicity. We will begin with some linear algebra proving the Primary decomposition theorem and the Cayley-Hamilton Theorem. Following this, we dive into the world of Lie algebras where we look at Lie algebras of dimensions 1, 2 and 3, representations of Lie algebras, weight spaces, Cartan's criteria and the root space decomposition of a Lie algebra L and define the Dynkin diagram and Cartan matrix. This will all culminate and serve as our arsenal in proving that these classical Lie algebras are all rather simple.
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publishDate 2021
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spelling oai:open.uct.ac.za:11427/33684 The Classical Lie algebras are more simple than they may appear Brache, Chad Blackman, Claire Mathematics and Applied Mathematics The purpose of this dissertation is to consider the classical Lie Algebras, namely: so(n, C), sl(n, C) and sp(n, C), n ≥ 2. Our aim will be to prove that if a Lie Algebra L is classical, except for so(2, C) and so(4, C), then it is simple. The classification and analysis will include finding their root systems and the associated Dynkin diagrams. The phrase it's the journey that teaches you a lot about your destination applies quite well here, as the bulk of our discussion will be assembling the tools necessary for proving simplicity. We will begin with some linear algebra proving the Primary decomposition theorem and the Cayley-Hamilton Theorem. Following this, we dive into the world of Lie algebras where we look at Lie algebras of dimensions 1, 2 and 3, representations of Lie algebras, weight spaces, Cartan's criteria and the root space decomposition of a Lie algebra L and define the Dynkin diagram and Cartan matrix. This will all culminate and serve as our arsenal in proving that these classical Lie algebras are all rather simple. 2021-08-03T10:35:10Z 2021-08-03T10:35:10Z 2021 2021-08-02T11:19:14Z Master Thesis Masters MSc http://hdl.handle.net/11427/33684 eng application/pdf Department of Mathematics and Applied Mathematics Faculty of Science
spellingShingle Mathematics and Applied Mathematics
Brache, Chad
The Classical Lie algebras are more simple than they may appear
thesis_degree_str Master's
title The Classical Lie algebras are more simple than they may appear
title_full The Classical Lie algebras are more simple than they may appear
title_fullStr The Classical Lie algebras are more simple than they may appear
title_full_unstemmed The Classical Lie algebras are more simple than they may appear
title_short The Classical Lie algebras are more simple than they may appear
title_sort classical lie algebras are more simple than they may appear
topic Mathematics and Applied Mathematics
url http://hdl.handle.net/11427/33684
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