#12170: Genus computation (using singular) and _singular_ object for function
filed
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Reporter: sydahmad | Owner: AlexGhitza
Type: enhancement | Status: needs_work
Priority: minor | Milestone: sage-5.0
Component: algebraic geometry | Keywords: function field, genus,
singular
Work_issues: | Upstream: N/A
Reviewer: | Author: Syed Ahmad Lavasani
Merged: | Dependencies: #9054
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Comment(by sydahmad):
Replying to [comment:7 saraedum]:
> I'm surprised myself but singular does not complain about fractions: `
sage: singular.ideal('y^5 - (x^3 + 2*x*y + 1/x)') -x^3-2*x*y+y^5 sage:
singular.eval('1/x') 0 ` The 1/x was just thrown out because in singular
it evaluates to 0.
So, basically, I need to clear the denominator before handing the job to
Singular, correct? If yes is there a method to do so, or I just compute
the GCD of the denom of all coeffs?
Thanx.
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/12170#comment:10>
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