#11824: Bug in ring_generators for relative orders
-----------------------------+----------------------------------------------
Reporter: davidloeffler | Owner: davidloeffler
Type: defect | Status: new
Priority: major | Milestone: sage-4.7.2
Component: number fields | Keywords: relative order
Work_issues: | Upstream: N/A
Reviewer: | Author:
Merged: | Dependencies:
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The function "ring_generators" crashes for orders in relative number
fields:
{{{
----------------------------------------------------------------------
| Sage Version 4.7.1, Release Date: 2011-08-11 |
| Type notebook() for the GUI, and license() for information. |
----------------------------------------------------------------------
sage: K.<a,b> = NumberField([x^2 + 1, x^2 - 2])
sage: OK = K.maximal_order()
sage: OK.ring_generators()
---------------------------------------------------------------------------
NotImplementedError Traceback (most recent call
last)
/home/masiao/<ipython console> in <module>()
/usr/local/sage/sage-4.7.1/local/lib/python2.6/site-
packages/sage/rings/number_field/order.pyc in ring_generators(self)
586 K = self._K
587 n = []
--> 588 V, from_V, to_V = self._K.vector_space()
589 A = ZZ**self.rank()
590 remaining = [x for x in self.basis() if x != 1]
/usr/local/sage/sage-4.7.1/local/lib/python2.6/site-
packages/sage/rings/number_field/number_field_rel.pyc in
vector_space(self)
1310
1311 """
-> 1312 raise NotImplementedError, "For a relative number field L
you must use either L.relative_vector_space() or L.absolute_vector_space()
as appropriate"
1313
1314 def absolute_base_field(self):
NotImplementedError: For a relative number field L you must use either
L.relative_vector_space() or L.absolute_vector_space() as appropriate
}}}
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/11824>
Sage <http://www.sagemath.org>
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