Equivariant and fractional index of projective elliptic operators
arXiv:math/0611819
Abstract
In this note the fractional analytic index, for a projective elliptic operator associated to an Azumaya bundle, of DG/0402329 is related to the equivariant index of Atiyah and Singer for an associated transversally elliptic operator.
7 pages; final version, to appear in JDG