Twisted K-theory and finite-dimensional approximation
arXiv:0803.2327 · doi:10.1007/s00220-009-0971-5
Abstract
We provide a finite-dimensional model of the twisted K-group twisted by any degree three integral cohomology class of a CW complex. One key to the model is Furuta's generalized vector bundle, and the other is a finite-dimensional approximation of Fredholm operators.
26 pages, LaTeX 2e, Xypic; main theorem improved