Get the list of coefficients of a BasicDiv (or a WDiv, QDiv or RDiv).
i1 : R = QQ[x,y,u,v]/ideal(x*y-u*v)
o1 = R
o1 : QuotientRing
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i2 : D = divisor(x)
o2 = 1*Div(v, x) + 1*Div(u, x) of R
o2 : WDiv
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i3 : getCoeffList(D)
o3 = {1, 1}
o3 : List
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i4 : E = divisor(x*u)
o4 = 1*Div(u, y) + 1*Div(v, x) + 2*Div(u, x) of R
o4 : WDiv
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i5 : getCoeffList(E)
o5 = {1, 1, 2}
o5 : List
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i6 : F = rationalDivisor({1/2, -2/3}, {ideal(x,u), ideal(x,v)})
o6 = 1/2*Div(x, u) + -2/3*Div(x, v) of R
o6 : QDiv
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i7 : getCoeffList(F)
1 2
o7 = {-, - -}
2 3
o7 : List
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i8 : G = realDivisor({0.5, -0.667}, {ideal(x,u), ideal(x,v)})
o8 = .5*Div(x, u) + -.667*Div(x, v) of R
o8 : RDiv
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i9 : getCoeffList(G)
o9 = {.5, -.667}
o9 : List
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