The Index of Projective Families of Elliptic Operators: the Decomposable Case
نویسنده
چکیده
An index theory for projective families of elliptic pseudodifferential operators is developed when the twisting, i.e. Dixmier-Douady, class is decomposable in H(X;Z)∪H(X;Z) ⊂ H(X;Z). One of the features of this special case is that the corresponding Azumaya bundle can be realized in terms of smoothing operators. The topological and the analytic index of a projective family of elliptic operators both take values in twisted K-theory of the parameterizing space, X. The main result is the equality of these two notions of index. The twisted Chern character of the index class is then computed by a variant of Chern-Weil theory.
منابع مشابه
The Index of Projective Families of Elliptic Operators
An index theory for projective families of elliptic pseudodifferential operators is developed. The topological and the analytic index of such a family both take values in twisted K-theory of the parametrizing space. The main result is the equality of these two notions of index when the twisting class is in the torsion subgroup tor(H3(X;Z)) and the Chern character of the index class is then comp...
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