Office of Academic Resources
Chulalongkorn University
Chulalongkorn University

Home / Help

AuthorSnaith, Victor P. author
TitleAlgebraic K-Groups as Galois Modules [electronic resource] / by Victor P. Snaith
ImprintBasel : Birkhรคuser Basel : Imprint: Birkhรคuser, 2002
Connect to
Descript X, 309 p. online resource


This volume began as the last part of a one-term graduate course given at the Fields Institute for Research in the Mathematical Sciences in the Autumn of 1993. The course was one of four associated with the 1993-94 Fields Institute programme, which I helped to organise, entitled "Artin L-functions". Published as [132]' the final chapter of the course introduced a manner in which to construct class-groupยญ valued invariants from Galois actions on the algebraic K-groups, in dimensions two and three, of number rings. These invariants were inspired by the analogous Chinยญ burg invariants of [34], which correspond to dimensions zero and one. The classical Chinburg invariants measure the Galois structure of classical objects such as units in rings of algebraic integers. However, at the "Galois Module Structure" workshop in February 1994, discussions about my invariant (0,1 (L/ K, 3) in the notation of Chapter 5) after my lecture revealed that a number of other higher-dimensional coยญ homological and motivic invariants of a similar nature were beginning to surface in the work of several authors. Encouraged by this trend and convinced that K-theory is the archetypical motivic cohomology theory, I gratefully took the opportunity of collaboration on computing and generalizing these K-theoretic invariants. These generalizations took several forms - local and global, for example - as I followed part of number theory and the prevalent trends in the "Galois Module Structure" arithmetic geometry


1 Galois Actions and L-values -- 1.1 Analytic prerequisites -- 1.2 The Lichtenbaum conjecture -- 1.3 Examples of Galois structure invariants -- 2 K-groups and Class-groups -- 2.1 Low-dimensional algebraic K-theory -- 2.2 Perfect complexes -- 2.3 Nearly perfect complexes -- 2.4 Higher-dimensional algebraic K-theory -- 2.5 Describing the class-group by representations -- 3 Higher K-theory of Local Fields -- 3.1 Local fundamental classes and K-groups -- 3.2 The higher K-theory invariants ?s(L/K,2) -- 3.3 Two-dimensional thoughts -- 4 Positive Characteristic -- 4.1 ?1(L/K,2) in the tame case -- 4.2 $$ Ext_{Z[G(L/K)]}̂2(F_{{v̂d}}̂*,F_{{v̂{2d}}}̂*) $$ -- 4.3 Connections with motivic complexes -- 5 Higher K-theory of Algebraic Integers -- 5.1 Positive รฉtale cohomology -- 5.2 The invariant ?n(N/K,3) -- 5.3 A closer look at ?1(L/K,3) -- 5.4 Comparing the two definitions -- 5.5 Some calculations -- 5.6 Lifted Galois invariants -- 6 The Wiles unit -- 6.1 The Iwasawa polynomial -- 6.2 p-adic L-functions -- 6.3 Determinants and the Wiles unit -- 6.4 Modular forms with coefficients in ?[G] -- 7 Annihilators -- 7.1K0(Z[G], Q) and annihilator relations -- 7.2 Conjectures of Brumer, Coates and Sinnott -- 7.3 The radical of the Stickelberger ideal

Mathematics Algebraic geometry Number theory Mathematics Number Theory Algebraic Geometry


Office of Academic Resources, Chulalongkorn University, Phayathai Rd. Pathumwan Bangkok 10330 Thailand

Contact Us

Tel. 0-2218-2929,
0-2218-2927 (Library Service)
0-2218-2903 (Administrative Division)
Fax. 0-2215-3617, 0-2218-2907

Social Network


facebook   instragram