Preface |
Inverse and Direct Limits / 1: |
Inverse or Projective Limits / 1.1: |
Direct or Inductive Limits / 1.2: |
Notes, Comments and Further Reading / 1.3: |
Profinite Groups / 2: |
Pro- <$>{\cal C}<$> Groups / 2.1: |
Basic Properties of Pro- <$>{\cal C}<$> Groups / 2.2: |
Existence of Sections |
Exactness of Inverse Limits of Profinite Groups |
The Order of a Profinite Group and Sylow Subgroups / 2.3: |
Generators / 2.4: |
Finitely Generated Profinite Groups / 2.5: |
Generators and Chains of Subgroups / 2.6: |
Procyclic Groups / 2.7: |
The Frattini Subgroup of a Profinite Group / 2.8: |
Pontryagin Duality for Profinite Groups / 2.9: |
Pullbacks and Pushouts / 2.10: |
Profinite Groups as Galois Groups / 2.11: |
Free Profinite Groups / 2.12: |
Profinite Topologies / 3.1: |
The Pro-<$>{\cal C}<$> Completion / 3.2: |
The Completion Functor |
Free Pro-<$>{\cal C}<$> Groups / 3.3: |
Free Pro - <$>{\cal C}<$> Group on a Set Converging to 1 |
Maximal Pro- <$>{\cal C}<$> Quotient Groups / 3.4: |
Characterization of Free Pro-<$>{\cal C}<$> Groups / 3.5: |
Open Subgroups of Free Pro-<$>{\cal C}<$> Groups / 3.6: |
Some Special Profinite Groups / 3.7: |
Powers of Elements with Exponents from <$>\hat {\rm Z}<$> / 4.1: |
Subgroups of Finite Index in a Profinite Group / 4.2: |
Profinite Abelian Groups / 4.3: |
Automorphism Group of a Profinite Group / 4.4: |
Automorphism Group of a Free Pro-p Group / 4.5: |
Profinite Frobenius Groups / 4.6: |
Torsion in the Profinite Completion of a Group / 4.7: |
Discrete and Profinite Modules / 4.8: |
Profinite Rings and Modules / 5.1: |
Duality Between Discrete and Profinite Modules |
Free Profinite Modules / 5.2: |
G-modules and Complete Group Algebras / 5.3: |
The Complete Group Algebra |
Projective and Injective Modules / 5.4: |
Complete Tensor Products / 5.5: |
Profinite G-spaces / 5.6: |
Free Profinite <$$$>[[RG]]-modules / 5.7: |
Diagonal Actions / 5.8: |
Homology and Cohomology of Profinite Groups / 5.9: |
Review of Homological Algebra / 6.1: |
Right and Left Derived Functors |
Bifunctors |
The Ext Functors |
The Tor Functors |
Cohomology with Coefficients in DMod(<$$$>[[RG]]) / 6.2: |
Standard Resolutions |
Homology with Coefficients in PMod(<$$$>[[RG]]) / 6.3: |
Cohomology Groups with Coefficients in DMod(G) / 6.4: |
The Functorial Behavior of Hn(G, A) and Hn(G, A) / 6.5: |
The Inflation Map |
Hn(G,A) as Derived Functors on DMod(G) / 6.6: |
Special Mappings / 6.7: |
The Restriction Map in Cohomology |
The Corestriction Map in Cohomology |
The Corestriction Map in Homology |
The Restriction Map in Homology |
Homology and Cohomology Groups in Low Dimensions / 6.8: |
H2 (G, A) and Extensions of Profinite Groups |
Extensions of Profinite Groups with Abelian Kernel / 6.9: |
Induced and Coinduced Modules / 6.10: |
The Induced Module <$>{\rm Ind}_H^G<$> (B) for H Open / 6.11: |
Cohomological Dimension / 6.12: |
Basic Properties of Dimension / 7.1: |
The Lyndon-Hochschild-Serre Spectral Sequence / 7.2: |
Cohomological Dimension of Subgroups / 7.3: |
Cohomological Dimension of Normal Subgroups and Quotients / 7.4: |
Groups G with cdp(G) ≤ 1 / 7.5: |
Projective Profinite Groups / 7.6: |
Free Pro-p Groups and Cohomological Dimension / 7.7: |
Generators and Relators for Pro-p Groups / 7.8: |
Cup Products / 7.9: |
Normal Subgroups of Free Pro - <$>{\cal C}<$> Groups / 7.10: |
Normal Subgroup Generated by a Subset of a Basis / 8.1: |
The S-rank / 8.2: |
Accessible Subgroups / 8.3: |
Accessible Subgroups H with w0(F/H) < rank(F) / 8.4: |
Homogeneous Pro- <$>{\cal C}<$> Groups / 8.5: |
Normal Subgroups / 8.6: |
Proper Open Subgroups of Normal Subgroups / 8.7: |
The Congruence Kernel of SL2(Z) / 8.8: |
Sufficient Conditions for Freeness / 8.9: |
Characteristic Subgroups of Free Pro- <$>{\cal C}<$> Groups / 8.10: |
Free Constructions of Profinite Groups / 8.11: |
Free Pro- <$>{\cal C}<$> Products / 9.1: |
Amalgamated Free Pro- <$>{\cal C}<$> Products / 9.2: |
Cohomological Characterizations of Amalgamated Products / 9.3: |
Pro- <$>{\cal C}<$> HNN extensions / 9.4: |
Open Questions / 9.5: |
Appendix |
Spectral Sequences / A1: |
Positive Spectral Sequences / A2: |
Spectral Sequence of a Filtered Complex / A3: |
Spectral Sequences of a Double Complex / A4: |
Bibliography / A5: |
Index of Symbols |
Index of Authors |
Index of Terms |
Preface |
Inverse and Direct Limits / 1: |
Inverse or Projective Limits / 1.1: |