Quadratic Forms Over Q and Galois Extensions of Commutative Rings
Quadratic Forms Over Q and Galois Extensions of Commutative Rings

Author: Frank DeMeyer

Publisher: American Mathematical Soc.

Published: 1989

Total Pages: 73

ISBN-13: 0821824570

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The object of the first two sections of this memoir is to give explicit descriptions of both the Witt ring of the rational numbers [bold]Q and the set of abelian extensions of [bold]Q. The third presents a discussion around a particular case of the Galois cubic extension, building on the general theory.

Ring Theory
Ring Theory

Author: Freddy M.J. van Oystaeyen

Publisher: Springer

Published: 2006-11-14

Total Pages: 237

ISBN-13: 3540398333

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Separable Algebras
Separable Algebras

Author: Timothy J. Ford

Publisher: American Mathematical Soc.

Published: 2017-09-26

Total Pages: 664

ISBN-13: 1470437708

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This book presents a comprehensive introduction to the theory of separable algebras over commutative rings. After a thorough introduction to the general theory, the fundamental roles played by separable algebras are explored. For example, Azumaya algebras, the henselization of local rings, and Galois theory are rigorously introduced and treated. Interwoven throughout these applications is the important notion of étale algebras. Essential connections are drawn between the theory of separable algebras and Morita theory, the theory of faithfully flat descent, cohomology, derivations, differentials, reflexive lattices, maximal orders, and class groups. The text is accessible to graduate students who have finished a first course in algebra, and it includes necessary foundational material, useful exercises, and many nontrivial examples.

Commutative Algebra
Commutative Algebra

Author: David Eisenbud

Publisher: Springer Science & Business Media

Published: 2013-12-01

Total Pages: 784

ISBN-13: 1461253500

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This is a comprehensive review of commutative algebra, from localization and primary decomposition through dimension theory, homological methods, free resolutions and duality, emphasizing the origins of the ideas and their connections with other parts of mathematics. The book gives a concise treatment of Grobner basis theory and the constructive methods in commutative algebra and algebraic geometry that flow from it. Many exercises included.

A Book of Abstract Algebra
A Book of Abstract Algebra

Author: Charles C Pinter

Publisher: Courier Corporation

Published: 2010-01-14

Total Pages: 402

ISBN-13: 0486474178

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Accessible but rigorous, this outstanding text encompasses all of the topics covered by a typical course in elementary abstract algebra. Its easy-to-read treatment offers an intuitive approach, featuring informal discussions followed by thematically arranged exercises. This second edition features additional exercises to improve student familiarity with applications. 1990 edition.