Returns the list of height-one prime ideals corresponding to the components of a BasicDiv. Note that if you don’t call simplifyDiv, this can return primes with coefficient equal to zero.
i1 : R = QQ[x,y,u,v]/ideal(x*y-u*v) o1 = R o1 : QuotientRing |
i2 : D = divisor(x) o2 = 1*Div(v, x) + 1*Div(u, x) of R o2 : WDiv |
i3 : getPrimeList(D) o3 = {ideal (v, x), ideal (u, x)} o3 : List |
i4 : E = divisor(x*u) o4 = 1*Div(u, y) + 1*Div(v, x) + 2*Div(u, x) of R o4 : WDiv |
i5 : getPrimeList(E) o5 = {ideal (u, y), ideal (v, x), ideal (u, x)} o5 : List |