THE LOCAL INDEX FORMULA IN NONCOMMUTATIVE GEOMETRY

被引:297
作者
CONNES, A
MOSCOVICI, H
机构
[1] INST HAUTES ETUD SCI, F-91440 BURES SUR YVETTE, FRANCE
[2] OHIO STATE UNIV, DEPT MATH, COLUMBUS, OH 43210 USA
关键词
D O I
10.1007/BF01895667
中图分类号
O1 [数学];
学科分类号
0701 ; 070101 ;
摘要
In noncommutative geometry a geometric space is described from a spectral vantage point, as a triple (A, H, D) consisting of a *-algebra A represented in a Hilbert space H together with an unbounded selfadjoint operator D, with compact resolvent, which interacts with the algebra in a bounded fashion. This paper contributes to the advancement of this point of view in two significant ways: (1) by showing that any pseudogroup of transformations of a manifold gives rise to such a spectral triple of finite summability degree, and (2) by proving a general, in some sense universal, local index formula for arbitrary spectral triples of finite summability degree, in terms of the Dixmier trace and its residue-type extension.
引用
收藏
页码:174 / 243
页数:70
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