#18399: projective automorphism group fails for homogenized maps
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Reporter: bhutz | Owner: bhutz
Type: defect | Status: new
Priority: minor | Milestone: sage-6.7
Component: algebraic geometry | Keywords: projective morphism
Merged in: | Authors: Ben Hutz
Reviewers: | Report Upstream: N/A
Work issues: | Branch:
Commit: | Dependencies:
Stopgaps: |
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When the numerator is a constant, the conversion to .polynomial()
conversion is return a different variable than the denominator. This is
the expected behavior from the documentation of those functions. So this
ticket will change how the conversion is done.
Example that fails
{{{
A.<z>=AffineSpace(QQ,1)
HA=End(A)
f=HA([1/z^7])
F=f.homogenize(1)
F.automorphism_group()
}}}
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Ticket URL: <http://trac.sagemath.org/ticket/18399>
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