#15393: compute the automorphism group of a morphism of P1
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Reporter: bhutz | Owner: bhutz
Type: enhancement | Status: needs_work
Priority: major | Milestone: sage-6.4
Component: algebraic | Resolution:
geometry | Merged in:
Keywords: sage-days55 | Reviewers: Grayson Jorgenson
Authors: bhutz, bthompson, | Work issues:
jdefaria | Commit:
Report Upstream: N/A | 7bdf289139a6ea011ede1f3c8fcd68ea9a83928a
Branch: | Stopgaps:
u/bhutz/ticket/15393 |
Dependencies: |
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Comment (by gjorgenson):
The following map fails:
{{{
sage: R.<x,y> = ProjectiveSpace(QQ,1)
sage: H = End(R)
sage: f=H([6*x^2 - 39*y^2, 2*y^2])
sage: f.automorphism_group(algorithm='CRT',return_functions=True,
iso_type=True)
AttributeError: 'sage.rings.integer.Integer' object has no attribute
'polynomial'
}}}
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Ticket URL: <http://trac.sagemath.org/ticket/15393#comment:13>
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