#20067: Change ring to QQbar fails for subschemes
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Reporter: bhutz | Owner: bhutz
Type: enhancement | Status: new
Priority: minor | Milestone: sage-7.1
Component: algebraic geometry | Keywords:
Merged in: | Authors:
Reviewers: | Report Upstream: N/A
Work issues: | Branch:
Commit: | Dependencies:
Stopgaps: |
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Change ring for subschemes does not let the user specify an embedding and
so fails for QQbar
{{{
K.<w>=QuadraticField(2)
P.<x,y> = ProjectiveSpace(K,1)
X = P.subscheme(x-y)
X.change_ring(QQbar)
}}}
{{{
K.<w>=QuadraticField(2)
P.<x,y> = ProjectiveSpace(K,1)
X = P.subscheme(x-y)
H = End(X)
f = H([6*x^2+2*x*y+16*y^2,-3*x^2-4*x*y-4*y^2])
f.change_ring(QQbar)
}}}
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Ticket URL: <http://trac.sagemath.org/ticket/20067>
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