Fields and Rings

Preface
Pt. I: Fields
1: Field extensions
2: Ruler and compass constructions
3: Foundations of Galois theory
4: Normality and stability
5: Splitting fields
6: Radical extensions
7: The trace and norm theorems
8: Finite fields
9: Simple extensions
10: Cubic and quartic equations
11: Separability
12: Miscellaneous results on radical extensions
13: Infinite algebraic extensions
Pt. II: Rings
1: The radical
2: Primitive rings and the density theorem
3: Semi-simple rings
4: The Wedderburn principal theorem
5: Theorems of Hopkins and Levitzki
6: Primitive rings with minimal ideals and dual vector spaces
7: Simple rings
Pt. III: Homological Dimension
1: Dimension of modules
2: Global dimension
3: First theorem on change of rings
4: Polynomial rings
5: Second theorem on change of rings
6: Third theorem on change of rings
7: Localization
8: Preliminary lemmas
9: A regular ring has finite global dimension
10: A local ring of finite global dimension is regular
11: Injective modules
12: The group of homomorphisms
13: The vanishing of Ext
14: Injective dimension
Notes
Index