chern.lib
LIB "chern.lib"; ring h=0, (t), dp; // The Chern numbers of the projective plane P_2: print( chNumbersProj(2) ); ==> [1]: ==> 9 ==> [2]: ==> 3 // The Chern numbers of P_3: print( chNumbersProj(3) ); ==> [1]: ==> 64 ==> [2]: ==> 24 ==> [3]: ==> 4