Author: Joseph Rotman

Publisher: Springer Science & Business Media

ISBN: 1461206170

Category: Mathematics

Page: 176

View: 6839

A clear, efficient exposition of this topic with complete proofs and exercises, covering cubic and quartic formulas; fundamental theory of Galois theory; insolvability of the quintic; Galoiss Great Theorem; and computation of Galois groups of cubics and quartics. Suitable for first-year graduate students, either as a text for a course or for study outside the classroom, this new edition has been completely rewritten in an attempt to make proofs clearer by providing more details. It now begins with a short section on symmetry groups of polygons in the plane, for there is an analogy between polygons and their symmetry groups and polynomials and their Galois groups - an analogy which serves to help readers organise the various field theoretic definitions and constructions. The text is rounded off by appendices on group theory, ruler-compass constructions, and the early history of Galois Theory. The exposition has been redesigned so that the discussion of solvability by radicals now appears later and several new theorems not found in the first edition are included.
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Author: Steven H. Weintraub

Publisher: Springer Science & Business Media

ISBN: 9780387287256

Category: Mathematics

Page: 185

View: 6376

Discusses Galois theory, treating fields of characteristic zero and of positive characteristic with consideration of both separable and inseparable extensions, but with an emphasis on algebraic extensions of the field of rational numbers. This book concludes with a discussion of the algebraic closure and of infinite Galois extensions.
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Author: Patrick Morandi

Publisher: Springer Science & Business Media

ISBN: 1461240409

Category: Mathematics

Page: 284

View: 1676

In the fall of 1990, I taught Math 581 at New Mexico State University for the first time. This course on field theory is the first semester of the year-long graduate algebra course here at NMSU. In the back of my mind, I thought it would be nice someday to write a book on field theory, one of my favorite mathematical subjects, and I wrote a crude form of lecture notes that semester. Those notes sat undisturbed for three years until late in 1993 when I finally made the decision to turn the notes into a book. The notes were greatly expanded and rewritten, and they were in a form sufficient to be used as the text for Math 581 when I taught it again in the fall of 1994. Part of my desire to write a textbook was due to the nonstandard format of our graduate algebra sequence. The first semester of our sequence is field theory. Our graduate students generally pick up group and ring theory in a senior-level course prior to taking field theory. Since we start with field theory, we would have to jump into the middle of most graduate algebra textbooks. This can make reading the text difficult by not knowing what the author did before the field theory chapters. Therefore, a book devoted to field theory is desirable for us as a text. While there are a number of field theory books around, most of these were less complete than I wanted.
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Author: Arne Ledet

Publisher: American Mathematical Soc.

ISBN: 9780821871805

Category: Mathematics

Page: 171

View: 1185

This monograph is concerned with Galois theoretical embedding problems of so-called Brauer type with a focus on 2-groups and on finding explicit criteria for solvability and explicit constructions of the solutions. Before considering questions of reducing the embedding problems and reformulating the solvability criteria, the author provides the necessary theory of Brauer groups, group cohomology and quadratic forms. The book will be suitable for students seeking an introduction to embedding problems and inverse Galois theory. It will also be a useful reference for researchers in the field.
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Author: Nancy Childress

Publisher: Springer Science & Business Media

ISBN: 0387724907

Category: Mathematics

Page: 226

View: 7255

Class field theory brings together the quadratic and higher reciprocity laws of Gauss, Legendre, and others, and vastly generalizes them. This book provides an accessible introduction to class field theory. It takes a traditional approach in that it attempts to present the material using the original techniques of proof, but in a fashion which is cleaner and more streamlined than most other books on this topic. It could be used for a graduate course on algebraic number theory, as well as for students who are interested in self-study. The book has been class-tested, and the author has included lots of challenging exercises throughout the text.
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Eine Einführung in die Theorie der endlichen Gruppen

Author: H. Kurzweil

Publisher: Springer-Verlag

ISBN: 3642953131

Category: Mathematics

Page: 190

View: 8676

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Volume I: Fields and Galois Theory

Author: Falko Lorenz

Publisher: Springer Science & Business Media

ISBN: 0387316086

Category: Mathematics

Page: 296

View: 7324

This translation of the 1987 German edition is an introduction into the classical parts of algebra with a focus on fields and Galois theory. It discusses nonstandard topics, such as the transcendence of pi, and new concepts are defined in the framework of the development of carefully selected problems. It includes an appendix with exercises and notes on the previous parts of the book, and brief historical comments are scattered throughout.
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Von der Gleichungsauflösung zur Galois-Theorie

Author: Jörg Bewersdorff

Publisher: Springer-Verlag

ISBN: 332291562X

Category: Mathematics

Page: 193

View: 2198

Eine leichtverständliche Einführung in die Algebra, die den historischen und konkreten Aspekt in den Vordergrund rückt. Das Buch liefert eine gute Motivation für die moderne Galois-Theorie, die den Studierenden oft so abstrakt und schwer erscheint.
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Author: Victor P. Snaith

Publisher: Courier Corporation

ISBN: 0486782271

Category: Mathematics

Page: 320

View: 7487

This advanced monograph on Galois representation theory by a renowned algebraist covers abelian and nonabelian cohomology of groups, characteristic classes of forms and algebras, explicit Brauer induction theory, more. 1989 edition.
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Author: Eberhard Freitag,Rolf Busam

Publisher: Springer-Verlag

ISBN: 3662073501

Category: Mathematics

Page: 477

View: 8123

Die komplexen Zahlen haben ihre historischen Wurzeln im 16. Jahrhundert, sie entstanden bei dem Versuch, algebraische Gleichungen zu lösen. So führte schon G. CARDANO (1545) formale Ausdrücke wie zum Beispiel 5 ± V-15 ein, um Lösungen quadratischer und kubischer Gleichungen angeben zu können. R. BOMBELLI rechnete um 1560 bereits systematisch mit diesen Ausdrücken 3 und fand 4 als Lösung der Gleichung x = 15x + 4 in der verschlüsselten Form 4 = ~2 + V-121 + ~2 - V-121. Auch bei G. W. LEIBNIZ (1675) findet man Gleichungen dieser Art, wie z.B. J 1 + V-3 + J 1 - V-3 = v6. Im Jahre 1777 führte L. EULER die Bezeichnung i = yCI für die imaginäre Einheit ein. Der Fachausdruck "komplexe Zahl" stammt von C. F. GAUSS (1831). Die strenge Einführung der komplexen Zahlen als Paare reeller Zahlen geht auf W. R. HAMILTON (1837) zurück. Schon in der reellen Analysis ist es gelegentlich vorteilhaft, komplexe Zahlen einzuführen. Man denke beispielsweise an die Integration rationaler Funktio nen, die auf der Partialbruchentwicklung und damit auf dem Fundamentalsatz der Algebra beruht: Über dem Körper der komplexen Zahlen zerfällt jedes Polynom in ein Produkt von Linearfaktoren.
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Author: Allan Clark

Publisher: Courier Corporation

ISBN: 9780486647258

Category: Mathematics

Page: 205

View: 8616

Lucid coverage of the major theories of abstract algebra, with helpful illustrations and exercises included throughout. Unabridged, corrected republication of the work originally published 1971. Bibliography. Index. Includes 24 tables and figures.
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Author: Mak Trifković

Publisher: Springer Science & Business Media

ISBN: 1461477174

Category: Mathematics

Page: 197

View: 9179

By focusing on quadratic numbers, this advanced undergraduate or master’s level textbook on algebraic number theory is accessible even to students who have yet to learn Galois theory. The techniques of elementary arithmetic, ring theory and linear algebra are shown working together to prove important theorems, such as the unique factorization of ideals and the finiteness of the ideal class group. The book concludes with two topics particular to quadratic fields: continued fractions and quadratic forms. The treatment of quadratic forms is somewhat more advanced than usual, with an emphasis on their connection with ideal classes and a discussion of Bhargava cubes. The numerous exercises in the text offer the reader hands-on computational experience with elements and ideals in quadratic number fields. The reader is also asked to fill in the details of proofs and develop extra topics, like the theory of orders. Prerequisites include elementary number theory and a basic familiarity with ring theory.
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Author: Michèle Audin,Mihai Damian

Publisher: Springer Science & Business Media

ISBN: 1447154967

Category: Mathematics

Page: 596

View: 887

This book is an introduction to modern methods of symplectic topology. It is devoted to explaining the solution of an important problem originating from classical mechanics: the 'Arnold conjecture', which asserts that the number of 1-periodic trajectories of a non-degenerate Hamiltonian system is bounded below by the dimension of the homology of the underlying manifold. The first part is a thorough introduction to Morse theory, a fundamental tool of differential topology. It defines the Morse complex and the Morse homology, and develops some of their applications. Morse homology also serves a simple model for Floer homology, which is covered in the second part. Floer homology is an infinite-dimensional analogue of Morse homology. Its involvement has been crucial in the recent achievements in symplectic geometry and in particular in the proof of the Arnold conjecture. The building blocks of Floer homology are more intricate and imply the use of more sophisticated analytical methods, all of which are explained in this second part. The three appendices present a few prerequisites in differential geometry, algebraic topology and analysis. The book originated in a graduate course given at Strasbourg University, and contains a large range of figures and exercises. Morse Theory and Floer Homology will be particularly helpful for graduate and postgraduate students.
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With an Introduction to Regularity Structures

Author: Peter K. Friz,Martin Hairer

Publisher: N.A

ISBN: 9783319083339

Category:

Page: 268

View: 4824

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Author: Jürgen Neukirch

Publisher: Springer-Verlag

ISBN: 3540376631

Category: Mathematics

Page: 595

View: 8576

Algebraische Zahlentheorie: eine der traditionsreichsten und aktuellsten Grunddisziplinen der Mathematik. Das vorliegende Buch schildert ausführlich Grundlagen und Höhepunkte. Konkret, modern und in vielen Teilen neu. Neu: Theorie der Ordnungen. Plus: die geometrische Neubegründung der Theorie der algebraischen Zahlkörper durch die "Riemann-Roch-Theorie" vom "Arakelovschen Standpunkt", die bis hin zum "Grothendieck-Riemann-Roch-Theorem" führt.
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Neu herausgegeben von Alexander Schmidt

Author: Jürgen Neukirch

Publisher: Springer-Verlag

ISBN: 364217325X

Category: Mathematics

Page: 204

View: 615

Der Klassiker zum Thema bietet Lesern, die mit den Grundlagen der algebraischen Zahlentheorie vertraut sind, einen raschen Zugang zur Klassenkörpertheorie. Die Neuauflage ist eine verbesserte Version des 1969 in der Reihe B. I.-Hochschulskripten (Bibliographisches Institut Mannheim) erschienenen gleichnamigen Bandes. Das Werk besteht aus drei Teilen: Im ersten wird die Kohomologie der endlichen Gruppen behandelt, im zweiten die lokale Klassenkörpertheorie, der dritte Teil widmet sich der Klassenkörpertheorie der endlichen algebraischen Zahlkörper.
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An Introduction to Arithmetic Topology

Author: Masanori Morishita

Publisher: Springer Science & Business Media

ISBN: 9781447121589

Category: Mathematics

Page: 191

View: 7549

This is a foundation for arithmetic topology - a new branch of mathematics which is focused upon the analogy between knot theory and number theory. Starting with an informative introduction to its origins, namely Gauss, this text provides a background on knots, three manifolds and number fields. Common aspects of both knot theory and number theory, for instance knots in three manifolds versus primes in a number field, are compared throughout the book. These comparisons begin at an elementary level, slowly building up to advanced theories in later chapters. Definitions are carefully formulated and proofs are largely self-contained. When necessary, background information is provided and theory is accompanied with a number of useful examples and illustrations, making this a useful text for both undergraduates and graduates in the field of knot theory, number theory and geometry. ​
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proceedings of the International Conference on Supersymmetry and Quantum Field Theory : dedicated to the 75th birthday anniversary of Dimitrij V. Volkov : Kharkov, Ukraine, 25-29 July 2000

Author: Dmitriĭ Vasilʹevich Volkov

Publisher: N.A

ISBN: N.A

Category: Quantum field theory

Page: 414

View: 3071

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