书目名称 | Equivariant K-Theory and Freeness of Group Actions on C*-Algebras |
编辑 | N. Christopher Phillips |
视频video | http://file.papertrans.cn/314/313547/313547.mp4 |
丛书名称 | Lecture Notes in Mathematics |
图书封面 |  |
描述 | Freeness of an action of a compact Lie group on a compact Hausdorff space is equivalent to a simple condition on the corresponding equivariant K-theory. This fact can be regarded as a theorem on actions on a commutative C*-algebra, namely the algebra of continuous complex-valued functions on the space. The successes of "noncommutative topology" suggest that one should try to generalize this result to actions on arbitrary C*-algebras. Lacking an appropriate definition of a free action on a C*-algebra, one is led instead to the study of actions satisfying conditions on equivariant K-theory - in the cases of spaces, simply freeness. The first third of this book is a detailed exposition of equivariant K-theory and KK-theory, assuming only a general knowledge of C*-algebras and some ordinary K-theory. It continues with the author‘s research on K-theoretic freeness of actions. It is shown that many properties of freeness generalize, while others do not, and that certain forms of K-theoretic freeness are related to other noncommutative measures of freeness, such as the Connes spectrum. The implications of K-theoretic freeness for actions on type I and AF algebras are also examined, and in |
出版日期 | Book 1987 |
关键词 | K-theory; algebra; group action; lie group |
版次 | 1 |
doi | https://doi.org/10.1007/BFb0078657 |
isbn_softcover | 978-3-540-18277-1 |
isbn_ebook | 978-3-540-47868-3Series ISSN 0075-8434 Series E-ISSN 1617-9692 |
issn_series | 0075-8434 |
copyright | Springer-Verlag Berlin Heidelberg 1987 |