genera(Ring)

• Function: genera

• Usage:

  genera R

• Inputs:
  • R, a ring
• Outputs:
  • a list, of the successive linear sectional arithmetic genera of projective scheme V with homogeneous coordinate ring R

i1 : R = ZZ/101[x_0..x_4];

i2 : I = ideal random(R^1, R^{-2,-3});

o2 : Ideal of R

i3 : genera(R/I)

o3 = {1, 4, 5}

o3 : List