Computes a list L of possible denominators of Laurent monomials representing FirstOrderDeformations of I. The list L is stratified into lists with ascending degree of the denominators. Each denominator is represented as a list of variables.
If the second argument v is given, one obtains only denominators contained (as a list) in v.
i1 : R=QQ[x_0..x_4]; |
i2 : I=ideal(x_0*x_1,x_1*x_2,x_2*x_3,x_3*x_4,x_4*x_0); o2 : Ideal of R |
i3 : possibleDenominators(I)
o3 = {{{x }, {x }, {x }, {x }, {x }}, {{x , x }, {x , x }, {x , x }, {x ,
0 1 2 3 4 0 1 1 2 2 3 0
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x }, {x , x }}}
4 3 4
o3 : List
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i4 : possibleDenominators(I,{x_0,x_1,x_2});
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The object possibleDenominators is a method function.