Re: SAGE Days 19, Trac ticket #7730

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William Stein

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Jan 4, 2010, 11:02:46 AM1/4/10
to Sebastian Pancratz, sagedays19
On Mon, Jan 4, 2010 at 3:41 AM, Sebastian Pancratz
<sebastian...@hertford.ox.ac.uk> wrote:
> Dear William,
>
> I've updated Trac ticket #7730.  There's not much success so far; in fact, the update shows two almost identical inputs exhibiting the vastly different timings of about 1s and 5h and, if anything, I am more puzzled now that the multivariate polynomial GCD implementation should be this sensitive to the input.

Singular's GCD totally sucks. Basically all open source GCD
implementations suck, last I checked.

> At the moment, the example is still in the form of fractions, but although I can't imagine the problem lying with additions and multiplications (rather than the GCD computations), I'll break it down to that level over lunch.  I am not quite sure whether I'll be able to resolve this ticket soon, though.
>
> Regarding SAGE Days 19, I've got two questions.  Since I am only leaving on Friday, 22 January, I am wondering whether you might perhaps have any suggestions for where I could book accommodation for the remaining two days?

This place is affordable and very nicely located:
http://www.collegeinnseattle.com/

> Secondly, I am wondering whether people attending make any plans for what they intend to work on in advance?

Yes, definitely. I hope everybody will have a list of about 20 bugs
they want to attack at the workshop before the workshop starts.
People can typically fix about 10-25 _interesting_ bugs during 5 days
of hard work.

> If that's the case, since the next two weeks will still be part of the undergraduate Christmas holidays, I should have some spare time to at least look at a couple of things.
>

Cool.

William

> Kind regards,
>
> Sebastian

--
William Stein
Associate Professor of Mathematics
University of Washington
http://wstein.org

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