Seminar series
          
      Date
              Fri, 10 Jun 2005
      
16:30
          16:30
Location
              L2
          Speaker
              Isadore Singer
          Organisation
              Massachusetts Institute of Technology
          I will give an expository account of Mathai, Melrose, and Singer 
[math.DG/0402329], explaining how to define the projective Dirac "operator" when 
the underlying manifold is neither spin nor spin_C, and how to define its 
analytic index which need not be an integer. Nevertheless, the usual index 
formulas apply.
Professor Singer will be admitted as honorary member of the London 
Mathematical Society just before his talk.