#18479: DirichletCharacter.minimize_base_ring() raises an error for some base
rings
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Reporter: pbruin | Owner:
Type: defect | Status: new
Priority: minor | Milestone: sage-6.8
Component: modular forms | Keywords: Dirichlet character
Merged in: | Authors:
Reviewers: | Report Upstream: N/A
Work issues: | Branch:
Commit: | Dependencies:
Stopgaps: |
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The following bug was found in comment:13:ticket:18086:
{{{
sage: f = Newforms(Gamma1(25), names='a')[1]
sage: eps = f.character()
sage: eps.base_ring()
Number Field in a1 with defining polynomial x^8 + 5*x^7 + 11*x^6 + 10*x^5
+ x^4 + 10*x^3 + 26*x^2 - 10*x + 1
sage: eps.minimize_base_ring()
Traceback (most recent call last):
...
TypeError: No compatible natural embeddings found for Complex Lazy Field
and Number Field in a1 with defining polynomial x^8 + 5*x^7 + 11*x^6 +
10*x^5 + x^4 + 10*x^3 + 26*x^2 - 10*x + 1
}}}
This also causes
{{{
sage: ModularForms(eps, 2)
Traceback (most recent call last):
...
TypeError: No compatible natural embeddings found for Complex Lazy Field
and Number Field in a1 with defining polynomial x^8 + 5*x^7 + 11*x^6 +
10*x^5 + x^4 + 10*x^3 + 26*x^2 - 10*x + 1
}}}
This error is similar to #18436.
--
Ticket URL: <http://trac.sagemath.org/ticket/18479>
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