Carregue numa fotografia para ir para os Livros Google.
A carregar... Cohomological Invariants in Galois Cohomologypor Skip Garibaldi, Alexander Merkurjev, Jean-Pierre Serre
Sem etiquetas Nenhum(a) A carregar...
Adira ao LibraryThing para descobrir se irá gostar deste livro. Ainda não há conversas na Discussão sobre este livro. Sem comentários sem críticas | adicionar uma crítica
Pertence a Série
This volume is concerned with algebraic invariants, such as the Stiefel-Whitney classes of quadratic forms (with values in Galois cohomology mod 2) and the trace form of etale algebras (with values in the Witt ring). The invariants are analogues for Galois cohomology of the characteristic classes of topology. Historically, one of the first examples of cohomological invariants of the type considered here was the Hasse-Witt invariant of quadratic forms. The first part classifies such invariants in several cases. A principal tool is the notion of versal torsor, which is an analogue of the universal bundle in topology. The second part gives Rost's determination of the invariants of $G$-torsors with values in $H^3(mathbb{{Q}}/mathbb{{Z}}(2))$, when $G$ is a semisimple, simply connected, linear group. This part gives detailed proofs of the existence and basic properties of the Rost invariant. This is the first time that most of this material appears in print. Não foram encontradas descrições de bibliotecas. |
Current DiscussionsNenhum(a)
Google Books — A carregar... GénerosSistema Decimal de Melvil (DDC)514.23Natural sciences and mathematics Mathematics Topology Algebraic TopologyClassificação da Biblioteca do Congresso dos EUA (LCC)AvaliaçãoMédia: Sem avaliações.É você?Torne-se num Autor LibraryThing. |