This function is used to reduce the rational expression given by the command
hilbertSeries. It is not automatically reduced, but sometimes it is useful to write it in reduced form. For instance, one might not notice that the series is a polynomial until it is reduced.
i1 : R = ZZ/101[x, Degrees => {2}];
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i2 : I = ideal x^2;
o2 : Ideal of R
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i3 : s = hilbertSeries I
4
1 - T
o3 = --------
2
(1 - T )
o3 : Expression of class Divide
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i4 : reduceHilbert s
2
1 + T
o4 = ------
1
o4 : Expression of class Divide
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