RWeilDivisor == RWeilDivisor -- whether two divisors are equal

Operator: ==
Usage:

(D == E)
Inputs:
- D, an instance of the type RWeilDivisor,
- E, an instance of the type RWeilDivisor,
Outputs:
- a Boolean value,

Description

This function returns true if the two divisors are equal

i1 : R = QQ[x,y];

i2 : D = divisor(x*y);

o2 : WeilDivisor on R

i3 : E = divisor(x);

o3 : WeilDivisor on R

i4 : F = divisor(y);

o4 : WeilDivisor on R

i5 : D == E

o5 = false

i6 : D == E+F

o6 = true

Here is an example with rational coefficients compared with integer coefficients.

i7 : R = QQ[x,y];

i8 : D = (1/2)*divisor(x)

o8 = 1/2*Div(x)

o8 : QWeilDivisor on R

i9 : D == 2*D

o9 = false

i10 : D + D == 2*D

o10 = true

i11 : E = divisor(x)

o11 = Div(x)

o11 : WeilDivisor on R

i12 : D == E

o12 = false

i13 : 2*D == E

o13 = true

The source of this document is in /build/macaulay2-88fgJW/macaulay2-1.25.11+ds/M2/Macaulay2/packages/WeilDivisors.m2:2622:0.