2014/05/30 by Nickolas Hein, Hein, Nickolas, Frank Sottile +3
Mathematics · #14N15 #14P99 #Algebraic Geometry (math.AG) #FOS: Mathematics #math.AG #msc:14N15 #msc:14P99
paper · pdf · doi:10.48550/arxiv.1405.7761
9 pages
arxiv created 2015/02/05 · arxiv updated 2015/02/06
We previously obtained a congruence modulo four for the number of real solutions to many Schubert problems on a square Grassmannian given by osculating flags. Here, we consider Schubert problems given by more general isotropic flags, and prove this congruence modulo four for the largest class of Schubert problems that could be expected to exhibit this congruence.