(Ebook) Basic Algebra II 2nd Edition by Nathan Jacobson 048647187X 9780486471877

(Ebook) Basic Algebra II 2nd Edition by Nathan Jacobson 048647187X 9780486471877

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ISBN-10 :  048647187X

ISBN-13 :  9780486471877

Author:  Nathan Jacobson  

A classic text and standard reference for a generation, this volume and its companion are the work of an expert algebraist who taught at Yale for more than three decades. Nathan Jacobson's books possess a conceptual and theoretical orientation; in addition to their value as classroom texts, they serve as valuable references. Volume II comprises all of the subjects usually covered in a first-year graduate course in algebra. Topics include categories, universal algebra, modules, basic structure theory of rings, classical representation theory of finite groups, elements of homological algebra with applications, commutative ideal theory, and formally real fields. In addition to the immediate introduction and constant use of categories and functors, it revisits many topics from Volume I with greater depth and sophistication. Exercises appear throughout the text, along with insightful, carefully explained proofs.

Basic Algebra II: 2nd Table of contents:

0.1 Zorn’s lemma
0.2 Arithmetic of cardinal numbers
0.3 Ordinal and cardinal numbers
0.4 Sets and classes
References
1 Categories
1.1 Definition and examples of categories
1.2 Some basic categorical concepts
1.3 Functors and natural transformations
1.4 Equivalence of categories
1.5 Products and coproducts
1.6 The horn functors. Representable functors
1.7 Universals
1.8 Adjoints
References
2 Universal Algebra
2.1 Ω-algebras
2.2 Subalgebras and products
2.3 Homomorphisms and congruences
2.4 The lattice of congruences. Subdirect products
2.5 Direct and inverse limits
2.6 Ultraproducts
2.7 Free Ω-algebras
2.8 Varieties
2.9 Free products of groups
2.10 Internal characterization of varieties
References
3 Modules
3.1 The categories R-mod and mod-R
3.2 Artinian and Noetherian modules
3.3 Schreier refinement theorem. Jordan-Hölder theorem
3.4 The Krull-Schmidt theorem
3.5 Completely reducible modules
3.6 Abstract dependence relations. Invariance of dimensionality
3.7 Tensor products of modules
3.8 Bimodules
3.9 Algebras and coalgebras
3.10 Projective modules
3.11 Injective modules. Injective hull
3.12 Morita contexts
3.13 The Wedderburn-Artin theorem for simple rings
3.14 Generators and progenerators
3.15 Equivalence of categories of modules
References
4 Basic Structure Theory of Rings
4.1 Primitivity and semi-primitivity
4.2 The radical of a ring
4.3 Density theorems
4.4 Artinian rings
4.5 Structure theory of algebras
4.6 Finite dimensional central simple algebras
4.7 The Brauer group
4.8 Clifford algebras
References
5 Classical Representation Theory of Finite Groups
5.1 Representations and matrix representations of groups
5.2 Complete reducibility
5.3 Application of the representation theory of algebras
5.4 Irreducible representations of Sn
5.5 Characters. Orthogonality relations
5.6 Direct products of groups. Characters of abelian groups
5.7 Some arithmetical considerations
5.8 Burnside’s paqb theorem
5.9 Induced modules
5.10 Properties of induction. Frobenius reciprocity theorem
5.11 Further results on induced modules
5.12 Brauer’s theorem on induced characters
5.13 Brauer’s theorem on splitting fields
5.14 The Schur index
5.15 Frobenius groups
References
6 Elements of Homological Algebra With Applications
6.1 Additive and abelian categories
6.2 Complexes and homology
6.3 Long exact homology sequence
6.4 Homotopy
6.5 Resolutions
6.6 Derived functors
6.7 Ext
6.8 Tor
6.9 Cohomology of groups
6.10 Extensions of groups
6.11 Cohomology of algebras
6.12 Homological dimension
6.13 Koszul’s complex and Hilbert’s syzygy theorem
References
7 Commutative Ideal Theory: General Theory and Noetherian Rings
7.1 Prime ideals. Nil radical
7.2 Localization of rings
7.3 Localization of modules
7.4 Localization at the complement of a prime ideal. Local-global relations
7.5 Prime spectrum of a commutative ring
7.6 Integral dependence
7.7 Integrally closed domains
7.8 Rank of projective modules
7.9 Projective class group
7.10 Noetherian rings
7.11 Commutative artinian rings
7.12 Affine algebraic varieties. The Hilbert Nullstellensatz
7.13 Primary decompositions
7.14 Artin-Rees lemma. Krull intersection theorem
7.15 Hilbert’s polynomial for a graded module
7.16 The characteristic polynomial of a noetherian local ring
7.17 Krull dimension
7.18 I-adic topologies and completions
References
8 Field Theory
8.1 Algebraic closure of a field
8.2 The Jacobson-Bourbaki correspondence
8.3 Finite Galois theory
8.4 Crossed products and the Brauer group
8.5 Cyclic algebras
8.6 Infinite Galois theory
8.7 Separability and normality
8.8 Separable splitting fields
8.9 Kummer extensions
8.10 Rings of Witt vectors
8.11 Abelian p-extension
8.12 Transcendency bases
8.13 Transcendency bases for domains. Affine algebras
8.14 Luroth’s theorem
8.15 Separability for arbitrary extension fields
8.16 Derivations
8.17 Galois theory for purely inseparable extensions of exponent one
8.18 Tensor products of fields
8.19 Free composites of fields
References
9 Valuation Theory
9.1 Absolute values
9.2 The approximation theorem
9.3 Absolute values on Q and F(x)
9.4 Completion of a field
9.5 Finite dimensional extensions of complete fields. The archimedean case
9.6 Valuations
9.7 Valuation rings and places
9.8 Extension of homomorphisms and valuations
9.9 Determination of the absolute values of a finite dimensional extension field
9.10 Ramification index and residue degree. Discrete valuations
9.11 Hensel’s lemma
9.12 Local fields
9.13 Totally disconnected locally compact division rings
9.14 The Brauer group of a local field
9.15 Quadratic forms over local fields
References
10 Dedekind Domains
10.1 Fractional ideals. Dedekind domains
10.2 Characterizations of Dedekind domains
10.3 Integral extensions of Dedekind domains
10.4 Connections with valuation theory
10.5 Ramified primes and the discriminant
10.6 Finitely generated modules over a Dedekind domain
References
11 Formally Real Fields
11.1 Formally real fields
11.2 Real closures
11.3 Totally positive elements
11.4 Hilbert’s seventeenth problem
11.5 Pfister theory of quadratic forms
11.6 Sums of squares in R(x1,…,xn), R a real closed field
11.7 Artin-Schreier characterization of real closed fields

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