François Bissey wrote:
> The spkg probably need an update as well as some love before being
> usable.
B.t.w., this is http://trac.sagemath.org/ticket/10224 .
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Am 13.02.2015 um 17:04 schrieb mmarco:
> Apperently there have been some movement on that aspect on sympy too:
Yes, but unfortunately no GSoC students worked on this. They also have no CAD
yet, see
https://github.com/sympy/sympy/wiki/GSoC-2015-Ideas#cylindrical-algebraic-decomposition
.
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Am 11.02.2015 um 13:52 schrieb mmarco:
> IIRC there was an old proposal about implementing semialgebraic sets.
Hello Miguel, can you point me to this old proposal? I could not find it
in the list archive and on the wiki.
Robert
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Am 12.02.2015 um 15:08 schrieb Dima Pasechnik:
>> "Add support for systems of rational inequalities".
[...]
> There was a mentioning of a bigger thing - computing with semialgebraic
> sets, and then this topic would naturally become a part of such a project.
Yes, my univariate case would fit into
Am 11.02.2015 um 05:03 schrieb William Stein:
> Does anybody have any GSoC projects to add to
>
> http://wiki.sagemath.org/GSoC/2015
I hope it is suitable that I have added something there:
"Add support for systems of rational inequalities".
BTW, is there a way to get notified per mail when
Am 05.12.2014 um 08:17 schrieb Nathann Cohen:
> In your past experiences (possibly when using Sage to teach in a
> classroom), in which areas do you think we are behind users' expectations ?
It should be possible to use Sage in 1st year students' math classes.
My pet peeve there is solving system
I wrote that qepcad cannot deal with terms like '-6 != 0'. This shows as
follows:
sage: qepcad(-6 != 0, vars='(x)')
---
ValueErrorTraceback (most recent call last)
in ()
> 1 qepcad(-Integ
Am 22.07.2014 10:29, schrieb Dima Pasechnik:
> perhaps a newer qepcad can deal with more things (Sage's qepcad 1.50
> is quite outdated by now). Care to make an update of the corresponding
> spkg?
I have been thinking about it.
As a first step I have built qepcad-B-1.69 and its dependency, the
cu
On Monday, July 1, 2013 11:37:02 AM UTC+2, I wrote:
>
> solve(abs((x-1)/(x-5)) <= 1/3, x)
>
[...]
> The main issue is that the result should be
>
> [[-1 <= x, x <= 2]]
>
I have found a way to get this! A little term massaging gives me the
equivalent:
sage: qepcad((x-1)^2 <= (1/3)^2 * (x-5)^2
Am 17.07.2014 11:31, schrieb Nathann Cohen:
> what if the russians suddendly attack the US, reach our
> server and achieve to erase our data ? (or what if our hard drive burns ?)
In Git, cloned Repositories are essentially backups of each other. So
when a "central" repository vanishes, just recrea
Am 11.07.2014 18:51, schrieb parisse:
> sage: %giac
>
> --> Switching to Giac <--
>
> giac: solve(abs((x-1)/(x-5)) <= 1/3, x)
> list[((x>=-1) and (x<=2))]
This looks great, and I could confirm this in Giac/Xcas.
However, there is no Sage instance easily available, where this works:
Both the c
I wrote
> * What would happen if Maxima were called with the default "domain : real"?
Of course I mean: What would happen if Maxima were *always* called like
that.
I have created the Maxima issue 'fourier_elim and "domain : complex"':
https://sourceforge.net/p/maxima/bugs/2783/
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If you mean: "what would happen if sage would initialize maxima_calculus
> (which is maxima_lib) with domain: real?" -- a lot of doctests would break.
>
Yes, that's what I meant, and you are confirming my assumption.
But shouldn't Maxima even give an error message when you ask it to solve an
Hello Nils, thank you for your analysis!
You wrote:
> It should really be no surprise that inequalities don't play nice with
> "domain: complex"
>
Hm. "domain : complex" is set both in maxima_lib.py and maxima.py. Which
one is responsible here?
It has been in there "forever" (I followed it bac
On Saturday, March 30, 2013 6:00:41 AM UTC+1, Jeroen Demeyer wrote:
>
> I'm here at the Sage-GIT workshop and it's very clear that the switch to
> GIT is happening.
>
Sorry for jumping in late, but I have only recently started using Sage, and
I might want to contribute some smaller patches in
Hello list!
I have already posted the following question to the Maxima mailing list [1],
but I am not sure whether corresponding improvements should go into Sage or
Maxima.
In Sage 5.4, when I enter
solve(abs((x-1)/(x-5)) <= 1/3, x)
I get the following DNF as output
#0: solve_rat_ineq(ineq=ab
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