Survey on Classifying Spaces for Families of Subgroups
Survey on Classifying Spaces for Families of Subgroups
复制标题
子群族分类空间的调查
DOI:
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发表时间:
2003
期刊:
影响因子:
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通讯作者:
W. Lueck
中科院分区:
文献类型:
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作者:
W. Lueck
We define for a topological group G and a family of subgroups ( mathcal{F} ) two versions for the classifying space for the family ( mathcal{F} ) , the G-CW-version ( E_mathcal{F} ) (G) and the numerable G-space version ( J_mathcal{F} ) (G). They agree if G is discrete, or if G is a Lie group and each element in ( mathcal{F} ) compact, or if ( mathcal{F} ) is the family of compact subgroups. We discuss special geometric models for these spaces for the family of compact open groups in special cases such as almost connected groups G and word hyperbolic groups G. We deal with the question whether there are finite models, models of finite type, finite dimensional models. We also discuss the relevance of these spaces for the Baum-Connes Conjecture about the topological K-theory of the reduced group C*-algebra, for the Farrell-Jones Conjecture about the algebraic K- and L-theory of group rings, for Completion Theorems and for classifying spaces for equivariant vector bundles and for other situations.