http://www.cnr.it/ontology/cnr/individuo/prodotto/ID44399
The K(pi, 1) problem for the affine Artin group of type (B)over-tilde(n) and its cohomology (Articolo in rivista)
- Type
- Label
- The K(pi, 1) problem for the affine Artin group of type (B)over-tilde(n) and its cohomology (Articolo in rivista) (literal)
- Anno
- 2010-01-01T00:00:00+01:00 (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
- 10.471/JEMS/187 (literal)
- Alternative label
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
- Callegaro F.; Moroni D.; Salvetti M. (literal)
- Pagina inizio
- Pagina fine
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
- Rivista
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#note
- In: Journal of the European Mathematical Society, vol. 12 (1) pp. 1 - 22. EUROPEAN MATHEMATICAL SOC, 2010. (literal)
- Note
- Scopu (literal)
- ISI Web of Science (WOS) (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
- Scuola Normale Superiore, Pisa, CNR-ISTI, Pisa, University of Pisa (literal)
- Titolo
- The K(pi, 1) problem for the affine Artin group of type (B)over-tilde(n) and its cohomology (literal)
- Abstract
- We prove that the complement to the affine complex arrangement of type (B) over tilde (n) is a K(pi, 1) space. We also compute the cohomology of the affine Artin group G (B) over tilde (n) ( of type (B) over tilde (n)) with coefficients in interesting local systems. In particular, we consider the module Q [q+/-1; t+/-1]; where the first n standard generators of G (B) over tilde (n) act by (-q)-multiplication while the last generator acts by (-t)-multiplication. Such a representation generalizes the analogous 1-parameter representation related to the bundle structure over the complement to the discriminant hypersurface, endowed with the monodromy action of the associated Milnor fibre. The cohomology of G (B) over tilde (n) with trivial coefficients is derived from the previous one. (literal)
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