SL(2)-regular Subvarieties of Complete Quadrics
  We determine SL(n)-stable, SL(2)-regular subvarieties of the variety of complete quadrics. We extend the results of Aky{\i}ld{\i}z and Carrell on Kostant-Macdonald identity by computing the Poincar{\'e} polynomials of these regular subvarieties. 
Mahir Bilen Can and Michael Joyce
math.AG math.GR