On Monday, 19 September 2016 18:59:08 UTC-6, Jason Grout wrote:
>
> Some ideas:
>
> Is the MoinMoin sage cell extension enabled?
> https://github.com/sagemath/sagecell/blob/master/contrib/moinmoin/sagecell.py.
> If
> it is enabled, was MoinMoin updated and the extension no longer works?
>
While
In keeping with Richard's suggestion, in Sage I think a good
_algebraic_ definition of 'real' is
bool(x/2+conjugate(x)/2 == x)
So
sage: def RN(x):
: try:
: return bool(x/2+conjugate(x)/2 == x)
: except:
: return false
which also works whenever conjuga
Some of you may be interested in this article by Paul-Olivier Dehaye:
https://www.aaup.org/article/mooc-platforms-surveillance-and-control
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Some ideas:
Is the MoinMoin sage cell extension enabled?
https://github.com/sagemath/sagecell/blob/master/contrib/moinmoin/sagecell.py.
If
it is enabled, was MoinMoin updated and the extension no longer works?
Thanks,
Jason
On Mon, Sep 19, 2016 at 8:48 PM William Stein wrote:
> On Mon, Sep 1
On Mon, Sep 19, 2016 at 1:46 PM, Andrey Novoseltsev
wrote:
> On Monday, 19 September 2016 10:53:27 UTC-6, William wrote:
>>
>> This seems to be an absolutely *massive* issue, which I'm sure was caused
>> by some API change by Andrey. These wiki pages have worked fine for about
>> 7 years, so it'
If arg(x) is 0 and x is a number, then it is a real number. Maxima calls
this carg() for complex arg.
Carg will also work for some things that are not of numeric type, but
symbolic in some way.
.
Like sqrt(x^2+y^2) is real if domain=real
Good luck
On Monday, September 19, 2016 at 7:37:18
I copied the generated source from a couple pages to an empty file and
added a link to the SageMathCell script,
https://sagecell.sagemath.org/static/embedded_sagecell.js";>
and the interacts run (albeit with numerous deprecation errors). There is
no problem with the SageMathCell server, the
On Monday, 19 September 2016 10:53:27 UTC-6, William wrote:
>
> This seems to be an absolutely *massive* issue, which I'm sure was caused
> by some API change by Andrey. These wiki pages have worked fine for about
> 7 years, so it's annoying that they are all suddenly broken.
>
> > I guess it w
Hi,
On Mon, Sep 19, 2016 at 06:54:29PM +0200, Jeroen Demeyer wrote:
> On 2016-09-19 18:37, Travis Scrimshaw wrote:
> >The closest I can get is "foo in RR". This fails for CC(2.3, 0), but I
> >consider that to be a real number.
>
> I would say it's a complex number which happens to have a real val
On Mon, Sep 19, 2016 at 9:56 AM, Jeroen Demeyer
wrote:
> On 2016-09-19 18:50, William Stein wrote:
>
>> That's only "dangerous" if you expect reset to do the same thing as
>> restart sage
>>
>
> I would guess that users *do* expect that.
sage: reset?
Docstring:
Delete all user-defined variab
On 2016-09-19 18:50, William Stein wrote:
That's only "dangerous" if you expect reset to do the same thing as
restart sage
I would guess that users *do* expect that.
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On 2016-09-19 18:37, Travis Scrimshaw wrote:
The closest I can get is "foo in RR". This fails for CC(2.3, 0), but I
consider that to be a real number.
I would say it's a complex number which happens to have a real value.
But it is not a real number. It's the difference between *coercion* and
This seems to be an absolutely *massive* issue, which I'm sure was caused
by some API change by Andrey. These wiki pages have worked fine for about
7 years, so it's annoying that they are all suddenly broken.
> I guess it was meant to use the Sage cell server to make the examples
actually work bu
On Mon, Sep 19, 2016 at 3:49 AM, Jeroen Demeyer
wrote:
> Hello,
>
> is there anybody who uses the functions reset() or restore() from
> src/sage/misc/reset.pyx
>
> They are meant to "reset" the global state in the interactive session to
> what it was when Sage started up. This seems useless (why
The closest I can get is "foo in RR". This fails for CC(2.3, 0), but I
consider that to be a real number.
Best,
Travis
On Monday, September 19, 2016 at 9:37:18 AM UTC-5, Jeroen Demeyer wrote:
>
> Hello,
>
> is there a simple way to check in Sage that something is a real number
> in some form?
Hello,
is there a simple way to check in Sage that something is a real number
in some form? That is, I am looking for a predicate which returns True
on all the following things:
int(2)
ZZ(2)
float(2.3)
QQ(23/10)
RR(2.3)
RDF(2.3)
SR(2.3)
2*pi
but not on things like
"2.3"
CC(2.3, 0)
SR.symbol
right.
Am Montag, 19. September 2016 15:58:25 UTC+2 schrieb Jeroen Demeyer:
>
> On 2016-09-19 15:55, 'Martin R' via sage-devel wrote:
> > I use it all the time, mainly for "x", "n", and "pi":
>
> But never reset() without arguments?
>
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On 2016-09-19 15:55, 'Martin R' via sage-devel wrote:
I use it all the time, mainly for "x", "n", and "pi":
But never reset() without arguments?
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I use it all the time, mainly for "x", "n", and "pi":
sage: n = 5
sage: del n
sage: n
---
NameError Traceback (most recent call last)
in ()
> 1 n
NameError: name 'n' is not defined
sage: r
The "interact" wiki page
https://wiki.sagemath.org/interact
is seriously broken: I guess it was meant to use the Sage cell server to
make the examples actually work but it doesn't do that anymore. What is
worse: also the source code is not shown, making the examples almost
totally useless...
n 19 September 2016 at 13:12, Thierry wrote:
> Hi,
>
> On Mon, Sep 19, 2016 at 12:49:27PM +0200, Jeroen Demeyer wrote:
>> Hello,
>>
>> is there anybody who uses the functions reset() or restore() from
>> src/sage/misc/reset.pyx
>
>
> Various users are frequently asking for this, see e.g. this 3-ho
Hi,
On Mon, Sep 19, 2016 at 12:49:27PM +0200, Jeroen Demeyer wrote:
> Hello,
>
> is there anybody who uses the functions reset() or restore() from
> src/sage/misc/reset.pyx
Various users are frequently asking for this, see e.g. this 3-hours-old
question on ask:
https://ask.sagemath.org/question
Hello,
is there anybody who uses the functions reset() or restore() from
src/sage/misc/reset.pyx
They are meant to "reset" the global state in the interactive session to
what it was when Sage started up. This seems useless (why not just quit
Sage and restart it?) and dangerous (it resets glo
On 2016-09-19 11:06, YannLC wrote:
Should this be patched in Sage? patched upstream? left to the user?
Certainly in upstream PARI.
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Hi,
In Perl, Debian is removing '.' from @INC :
https://lists.debian.org/debian-devel-announce/2016/08/msg00013.html
This breaks the build for PARI on my machine. The workaround I used is just
to add '.' to PERL5LIB when building sage.
Should this be patched in Sage? patched upstream? left to
On Sunday, September 18, 2016 at 11:27:17 PM UTC+2, rjf wrote:
>
> looks to me like you should use some kind of decision procedure that gets
> the right answer.
>
Doesn't it boil down to where functions have rational or algebraic
versus irrational or transcendental values?
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