betti(Ideal) -- gives the degrees of generators.

Synopsis

Usage:
betti I
Function: betti
Inputs:
- I, an ideal
Outputs:
- a Betty tally, a diagram showing the degrees of the generators of the modules in C

The output is the degrees of generators and relations of the quotient of the ambient ring by the ideal.

i1 : S = ZZ/10007[x,y];

i2 : I = ideal(x^2,y^3);

o2 : Ideal of S

i3 : betti I

            0 1
o3 = total: 1 2
         0: 1 .
         1: . 1
         2: . 1

o3 : BettiTally

For an explanation of the diagram, see betti(ChainComplex).