On 5/29/07, john_perry_usm <[EMAIL PROTECTED]> wrote:
>
> Hi,
>
> I tried running parts of the NumberField tutorial in the latest Mac
> OSX build,
> sage-2.5.3-powerpc-osx-PowerMacintosh-Darwin
> I have two problems running the tutorial 2.2.
>
> (1) The first line says to define
> x = PolynomialRing(QQ).gen()
> This does not work:
The corrected line is
x = PolynomialRing(QQ, 'x').gen()
or equivalently,
x = polygen(QQ, 'x')
I had fixed this in my local install recently, but not in time for 2.5.3.
> (2) The fifth line has
> K.galois_group()
> This gives me an error, too. (Traceback at bottom.) If I read the
> error correctly (and I may not) SAGE thinks that the optional GAP
> package isn't installed, but in fact a gap package of some sort is in
> the "installed" directory of "spkg". Running the tutorial 13.3.1 gives
> no trouble at all. Exiting SAGE gives the message "Exiting spawned Gap
> process."
> Any ideas what's wrong?
Yes. You need to install the GAP database package:
sage -i database_gap-4.4.9.spkg
I'm seriously considering including this (and a few other optional
packages) standard in all binary installs. It would only increase
the download size by 30MB, and would avoid confusion. Any
thoughts about this?
Thanks for your feedback -- it's feedback like this that is critical
if SAGE is to one day ascribe to the same level of quality as
commercial mathematics software. Thanks!
William
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