[sage-devel] Re: All known bugs in Sage silently producing wrong answers
I would add 12080 Manin constant 10698 error in padic power series construction 8198 p-adic precision in vector multiplication Chris -- To post to this group, send an email to sage-devel@googlegroups.com To unsubscribe from this group, send an email to sage-devel+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-devel URL: http://www.sagemath.org
[sage-devel] Re: All known bugs in Sage silently producing wrong answers
I'd like to add the resultant problem I posted to sage-devel yesterday. It sounds like it is an actual bug, but not filed. When my trac account gets approved I'll file a bug for it. On Mar 21, 2:56 pm, William Stein wrote: > Hi Proud Sage Developers, > > At the current Sage workshop some people (me, David Roe, Jen > Balakrishnan, etc.) have made a stopgap function and identified Trac > tickets describing "Bugs silently producing wrong answers". So far > they listed 7 of them:http://trac.sagemath.org/sage_trac/report/79 -- To post to this group, send an email to sage-devel@googlegroups.com To unsubscribe from this group, send an email to sage-devel+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-devel URL: http://www.sagemath.org
[sage-devel] Re: All known bugs in Sage silently producing wrong answers
Hi,
Here's one:
sage: K. = NumberField(x-2/3)
sage: K.is_prime_field()
False
The code is just a bit too naive:
Source:
def is_prime_field(self):
r"""
Return True if this ring is one of the prime fields `\QQ` or `
\GF{p}`.
...
"""
return False
i.e. is probably just isn't implemented for number fields.
Once one realises that the default function returns False if it is
not
defined in a subclass, it is possible to find other examples:
sage: P. = QQ[x]
sage: R. = P.quo(x-1)
sage: R.is_field()
True
sage: R.is_prime_field()
False
--David
--
To post to this group, send an email to sage-devel@googlegroups.com
To unsubscribe from this group, send an email to
sage-devel+unsubscr...@googlegroups.com
For more options, visit this group at http://groups.google.com/group/sage-devel
URL: http://www.sagemath.org
