# betti(Module) -- show the degrees of the generators and relations of a module or a coherent sheaf

## Synopsis

• Function: betti
• Usage:
betti M
• Inputs:
 i1 : S = ZZ/10007[x,y]; i2 : betti coker matrix{{x^3,x*y^2},{y*x^2,y^3}} 0 1 o2 = total: 2 2 0: 2 . 1: . . 2: . 2 o2 : BettiTally
 i3 : betti coker map(S^{0,-1},,matrix{{x^2,y},{y^3,x^2}}) 0 1 o3 = total: 2 2 0: 1 . 1: 1 . 2: . 1 3: . 1 o3 : BettiTally