Chern-Schwartz-MacPherson (CSM) Classes

• Maple code for computing CSM classes of Schubert cells in the Grassmannian. Click [here] to download the source code.

  This software requires that you have the SF package written by John Stembridge installed. Follow the instructions listed at the top of the file 'csm_class.txt' for further requirements. Here is an example Maple session which computes the CSM class of the 3-dimensional singular Schubert varieties in GR(2,4).

• Sample CSM class calculations:
  1. CSM classes of Schubert cells in GR(2,5): [txt] (These are best viewed in a fixed-width font)
  2. CSM classes of Schubert cells in GR(3,6): [txt] (These are best viewed in a fixed-width font)
  3. CSM classes of Schubert cells in GR(3,7): [txt] (These are best viewed in a small, fixed-width font)