Extending Structures

Fundamentals and Applications

By: Ana Agore, Gigel Militaru

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Hardcover | 27 August 2019 | Edition Number 1

At a Glance

Hardcover
244 Pages

Dimensions(cm)
23.39 x 15.6 x 1.42

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Extending Structures: Fundamentals and Applications treats the extending structures (ES) problem in the context of groups, Lie/Leibniz algebras, associative algebras and Poisson/Jacobi algebras. This concisely written monograph offers the reader an incursion into the extending structures problem which provides a common ground for studying both the extension problem and the factorization problem.

Features

Provides a unified approach to the extension problem and the factorization problem
Introduces the classifying complements problem as a sort of converse of the factorization problem; and in the case of groups it leads to a theoretical formula for computing the number of types of isomorphisms of all groups of finite order that arise from a minimal set of data
Describes a way of classifying a certain class of finite Lie/Leibniz/Poisson/Jacobi/associative algebras etc. using flag structures
Introduces new (non)abelian cohomological objects for all of the aforementioned categories
As an application to the approach used for dealing with the classification part of the ES problem, the Galois groups associated with extensions of Lie algebras and associative algebras are described

Industry Reviews

"One of the most fundamental problems in all of abstract algebra is the question of building algebras using known subalgrebras. Agore (Romanian Academy) and Militaru (Univ. of Bucharest) present a unified theory of the many different approaches to the extension and classification problems in this jointly authored work. The text is extremely well written and well organized, with readers fully in mind. While it adds up to an excellent monograph that deserves to be added to any mathematics library, the book is essentially a compilation of professional papers by the authors, intended solely for researchers in this field. Even given this caveat, the professional mathematician might wonder if the book is right for their specific niche within extension theory. It is clear that the authors took this concern into consideration in crafting the table of contents. Each chapter forms its own module and focuses on one type of algebraic structure as it relates to the extension problem. Thus we have a chapter on groups, a chapter on associative algebras, a chapter on Lie algebras, and so on. Any interested researcher could pick up the book, flip to the chapter of interest and benefit from using this great reference."
- Choice Review, A. Misseldine, Southern Utah University

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