Indeed, the factor function of Sage is terribly buggy at the moment, see
https://trac.sagemath.org/ticket/27304
The issue you report seems to have been triggered by
https://trac.sagemath.org/ticket/23835 (merged in Sage 8.4.beta3) as well,
since we have a correct result in Sage 8.3:
Hello
I haven't been able to find this very same bug in the trac or in the
sage-level group, even though some related ones have been reported
L = (u + t)/(u - t)
factor( L.substitute(t=sqrt(u)))
yields
(u + 1)/(u - 1)
which is wrong (the example is small enough to be verifiable by hand).
On Mon, May 6, 2019 at 12:25 AM Andrey Novoseltsev wrote:
>
> OK, here is me not trying to rely on implicit printing by REPL:
>
> sage: gap.eval("Print({});".format(10^1))
> '10'
> sage: gap.eval("Print({});".format(10^10))
> '100'
> sage: gap.eval("Print({});".format(10^100))
> ''
>
> Is
I opened https://trac.sagemath.org/ticket/27778 for this
I can also reproduce this on Gentoo Linux with Sage 8.8.beta3
On Mon, May 6, 2019 at 10:00 AM Daniel Krenn wrote:
>
> On 06.05.19 10:37, David Roe wrote:
> > I've run across a strange bug that seems to be hardware dependent:
>
> I can
I'd like to see options to build sage exclusively with Python 2 or 3.
Having both in one build might be useful, but not always.
--with-pythonX=no/yes/system, with X in {2.3}
(for the time being "system" might mean that everything is happening
in the virtual environment of pythonX)
On Mon, May
On 06.05.19 10:37, David Roe wrote:
> I've run across a strange bug that seems to be hardware dependent:
I can reproduce the error on both systems that I've just checked:
Intel(R) Core(TM) i7-8550U CPU @ 1.80GHz (Laptop)
Intel(R) Core(TM) i5-4690 CPU @ 3.50GHz (Desktop)
Both run Linux Mint
I've run across a strange bug that seems to be hardware dependent: it is
repeatable on an Ubuntu server, but I can't replicate it on my Macbook Pro
or on Cocalc. It occurs when factoring rational polynomials, and gives an
error message from pari: "bug in gerepile, significant pointers lost,
