Commutative Algebra: with a View Toward Algebraic Geometry 9783540781226, 9781461253501, 1461253500

Table of contents :
Advice for the Beginner --
Information for the Expert --
Prerequisites --
Sources --
Courses --
Acknowledgements --
0 Elementary Definitions --
0.1 Rings and Ideals --
0.2 Unique Factorization --
0.3 Modules --
I Basic Constructions --
1 Roots of Commutative Algebra --
2 Localization --
3 Associated Primes and Primary Decomposition --
4 Integral Dependence and the Nullstellensatz --
5 Filtrations and the Artin-Rees Lemma --
6 Flat Families --
7 Completions and Hensel's Lemma --
II Dimension Theory --
8 Introduction to Dimension Theory --
9 Fundamental Definitions of Dimension Theory --
10 The Principal Ideal Theorem and Systems of Parameters --
11 Dimension and Codimension One --
12 Dimension and Hilbert-Samuel Polynomials --
13 The Dimension of Affine Rings --
14 Elimination Theory, Generic Freeness, and the Dimension of Fibers --
15Gröbner Bases --
16 Modules of Differentials --
III Homological Methods --
17 Regular Sequences and the Koszul Complex --
18 Depth, Codimension, and Cohen-Macaulay Rings --
19 Homological Theory of Regular Local Rings --
20 Free Resolutions and Fitting Invariants --
21 Duality, Canonical Modules, and Gorenstein Rings --
Appendix 1 Field Theory --
A1.1 Transcendence Degree --
A1.2 Separability --
A1.3.1 Exercises --
Appendix 2 Multilinear Algebra --
A2.1 Introduction --
A2.2 Tensor Product --
A2.3 Symmetric and Exterior Algebras --
A2.3.1 Bases --
A2.3.2 Exercises --
A2.4 Coalgebra Structures and Divided Powers --
A2.5 Schur Functors --
A2.5.1 Exercises --
A2.6 Complexes Constructed by Multilinear Algebra --
A2.6.1 Strands of the Koszul Comple --
A2.6.2 Exercises --
Appendix 3 Homological Algebra --
A3.1 Introduction --
I: Resolutions and Derived Functors --
A3.2 Free and Projective Modules --
A3.3 Free and Projective Resolutions --
A3.4 Injective Modules and Resolutions --
A3.4.1 Exercises --
Injective Envelopes --
Injective Modules over Noetherian Rings --
A3.5 Basic Constructions with Complexes --
A3.5.1 Notation and Definitions --
A3.6 Maps and Homotopies of Complexes --
A3.7 Exact Sequences of Complexes --
A3.7.1 Exercises --
A3.8 The Long Exact Sequence in Homology --
A3.8.1 Exercises --
Diagrams and Syzygies --
A3.9 Derived Functors --
A3.9.1 Exercise on Derived Functors --
A3.10 Tor --
A3.10.1 Exercises: Tor --
A3.1l Ext --
A3.11.1 Exercises: Ext --
A3.11.2 Local Cohomology --
II: From Mapping Cones to Spectral Sequences --
A3.12 The Mapping Cone and Double Complexe --
A3.12.1 Exercises: Mapping Cones and Double Complexes --
A3.13 Spectral Sequences --
A3.13.1 Mapping Cones Revisited --
A3.13.2 Exact Couples --
A3.13.3 Filtered Differential Modules and Complexes --
A3.13.4 The Spectral Sequence of a Double Complex --
A3.13.5 Exact Sequence of Terms of Low Degree --
A3.13.6 Exercises on Spectral Sequences --
A3.14 Derived Categories --
A3.14.1 Step One: The Homotopy Category of Complexes --
A3.14.2 Step Two: The Derived Category --
A3.14.3 Exercises on the Derived Category --
Appendix 4 A Sketch of Local Cohomology --
A4.1 Local Cohomology and Global Cohomology --
A4.2 Local Duality --
A4.3 Depth and Dimensio --
Appendix 5 Category Theory --
A5.1 Categories, Functors, and Natural Transformations --
A5.2 Adjoint Functors --
A5.2.1 Uniqueness --
A5.2.2 Some Examples --
A5.2.3 Another Characterization of Adjoints --
A5.2.4 Adjoints and Limits --
A5.3 Representable Functors and Yoneda's Lemma --
Appendix 6 Limits and Colimits --
A6.1 Colimits in the Category of Modules --
A6.2 Flat Modules as Colimits of Free Modules --
A6.3 Colimits in the Category of Commutative Algebras --
A6.4 Exercises --
Appendix 7 Where Next? --
References --
Index of Notation.

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