#8446: avoid 0^0 in number fields
-----------------------------+----------------------------------------------
Reporter: rlm | Owner: davidloeffler
Type: defect | Status: needs_review
Priority: major | Milestone: sage-4.3.4
Component: number fields | Keywords:
Author: Robert Miller | Upstream: N/A
Reviewer: | Merged:
Work_issues: |
-----------------------------+----------------------------------------------
Description changed by rlm:
Old description:
> In the case of a trivial number field, such as
> {{{
> K.<a> = NumberField(polygen(QQ))
> }}}
> the Selmer group function doesn't work, since the generator `a` of the
> number field is 0, and when we're constructing polynomials we use the
> form `coeff*a**i`. However, if `i==0`, we get an `ArithmeticError` since
> Sage does not have conventions for `0^0`.
New description:
In the case of a trivial number field, such as
{{{
K.<a> = NumberField(polygen(QQ))
}}}
the Selmer group function doesn't work, since the generator `a` of the
number field is 0, and when we're constructing polynomials we use the form
`coeff*a**i`. However, if `i==0`, we get an `ArithmeticError` since Sage
does not have conventions for `0^0`.
I found several places where this comes up, and I've fixed them where I
can.
--
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/8446#comment:2>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
--
You received this message because you are subscribed to the Google Groups
"sage-trac" group.
To post to this group, send email to [email protected].
To unsubscribe from this group, send email to
[email protected].
For more options, visit this group at
http://groups.google.com/group/sage-trac?hl=en.
