reduce() for fraction field elements

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AShah
11 ●1

slelievre
17799 ●22 ●163 ●352 http://carva.org/samue...

I am having an issue with the reduce() method for FractionFieldElement. In a Jupyter notebook I executed the following code

sage: S = FractionField(QQ['t'])
sage: S.inject_variables()
sage: R = PolynomialRing(FractionField(QQ['t']),'x',3)
sage: R.inject_variables()
sage: (((x0^2-x1^2)/(x0-x1)).reduce())

but this returned an object with NoneType, rather than a fraction field element or ring element. What am I doing wrong?

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answered 3 years ago

rburing

10964 ●4 ●80 ●219 https://www.rburing.nl/

updated 3 years ago

See the documentation of reduce: it modifies the element instead of returning a new copy. So:

sage: f = (x0^2-x1^2)/(x0-x1)
sage: f.reduce()
sage: f
x0 + x1

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Asked: 3 years ago

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Last updated: Jan 29 '22

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