Computations of K- and L-Theory of Cocompact Planar Groups

Computations of K- and L-Theory of Cocompact Planar Groups
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余紧平面群的K-和L-理论的计算

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发表时间:
2000
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通讯作者:
Rolan Stamm
Rolan Stamm
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作者:
Rolan Stamm

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Baum和Connes以及Farrell和Jones对某些群类的同构图的验证被用来计算余紧平面群(D余紧N.E.C-群)和群G出现在扩张1中的代数K-理论和拓扑K-理论。Z n! G! G! ! 1w是有限群,Zn上的共轭作用在0 2Zn之外是自由的.例如,这些计算适用于二维晶体群和余紧富克斯群。数学学科分类(2000):19B28、19D50、19G24、19K99。
The verification of the isomorphism conjectures of Baum and Connes and Farrell and Jones for certain classes of groups is used to compute the algebraic K -a ndL-theory and the topolo- gicalK-theory of cocompact planar groups (D cocompact N.E.C-groups) and of groupsG appearing in an extension 1 ! Z n ! G ! ! 1w here is a finite group and the conjugation - action on Z n is free outside 0 2 Z n . These computations apply, for instance, to two-dimensional crystallographic groups and cocompact Fuchsian groups. Mathematics Subject Classifications ( 2000): 19B28, 19D50, 19G24, 19K99.