Hello,
If I have, say,
R = PolynomialRing(QQ, 'x', 5)
And I have two polynomials, one of which divides the other. Then I can do
f/g
but the result will be an element of the fraction field of R, even though
it actually lives in R. I can write
(f/g).numerator()
to get back to R, but I feel that
Thank you!
this oom-killer did indeed kill my processes.
This solve my problem:)
thanks again
Op woensdag 7 juni 2017 17:49:13 UTC+2 schreef Jan Groenewald:
>
> Hi
>
> On 7 June 2017 at 17:33, Robin van der veer > wrote:
>
>> Hi,
>>
>> I'm running a wi
Dear John,
I am already flushing after every file.write(), so this cannot be the
problem. (this was the first thing I tried when I noticed the problem, and
after another 2 hour wait I concluded that it did not solve my problem)
Robin
Op woensdag 7 juni 2017 17:37:32 UTC+2 schreef John Cremona
ng in the way I described?
Op woensdag 7 juni 2017 17:30:37 UTC+2 schreef Jan Groenewald:
>
> Hi
>
> On 7 June 2017 at 17:24, Robin van der veer > wrote:
>
>> I'm running Sage on my local machine (so not the sage math cloud), and
>> some of my computations just sto
I'm running Sage on my local machine (so not the sage math cloud), and some
of my computations just stop with no output or error message.
My code looks essentially like this:
@parallel
def compute(revLex):
long computations
print some stuff
write some stuff to files
return
r = co
I similar "problem": atoms() is not implemented for the MeetSemilattice,
while it certainly makes sense there.
Op maandag 3 april 2017 23:57:44 UTC+2 schreef Robin van der veer:
>
> Hello,
>
> I wonder if there is any way to use the join or meet operations in
> arbi
017 06:01:48 UTC+2 schreef jori.ma...@uta.fi:
>
> On Mon, 3 Apr 2017, Robin van der veer wrote:
>
> > I wonder if there is any way to use the join or meet operations in
> arbitrary
> > posets?
>
> How fast that should be? The trivial implementation is just 4 lines
Hello,
I wonder if there is any way to use the join or meet operations in
arbitrary posets?
It seems that these methods are only exposed in the classes of join- resp.
meet semilattices.
However, it would be very convenient if these methods were available in
general posets somehow, and would ju
zero is
misleading, I would expect either an error or to return 'infinity', or to
report that the integral is divergent.
best wishes
Robin
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"sage-
ersion was "SageMath Version 7.1,
Release Date: 2016-03-20".
Best wishes
Robin
On Fri, Apr 22, 2016 at 2:26 PM, kcrisman wrote:
> Can you say exactly how you fired up the notebook? Was this a binary
> download, or a build from scratch?
>
> Hi
>>
>> sage 7
ed
Help!
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report attached
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eople like me.
best wishes [marked 'resolved']
Robin
On Tuesday, 27 May 2014 12:41:23 UTC+12, leif wrote:
>
> robin wrote:
> >
> > > Can anyone advise? I am very very very reluctant to
> > > adopt the ghastly "**" notation.
&
the file with
> 'sage'), simply rename your file to "f.sage".
>
> Similar holds for '.pyx' vs. '.spyx'; the latter first gets preparsed.
>
>
>
> thanks for this Leif. Where do I look for documentation of this issue?
The help page for load(
ret is interpreted as expected:
sage: o = 10^6
sage: o
100
sage:
Is this a bug? Can anyone advise? I am very very very reluctant to adopt
the ghastly "**" notation.
best wishes
Robin
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--
You received this messa
conj(sin(x)), and so
on.
In sage I can type sin? or sin?? but these don't give me the whole corpus
of known information.
What is the sage equivalent to FunctionAdvisor()?
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You received this message because you are subscribed to th
uot; gives me an
unhelpful error message about indexing. What does this message mean
and how can I mitigate it?
(3) The docs say "For more details about solving a single equation,
see the documentation for the single-expression solve()"
Where can I find this documentation online?
name 'z38' is not defined
sage:
How do I make z38 equal to 3?
thanks
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== 2*pi*z270 +
1/9007199254740992*I + 1065/452]
After the first, the solutions are not actually solutions of the
equation. Is this reportable or have I misunderstood what solve() is
supposed to do?
Robin
On Wed, Jun 12, 2013 at 1:03 PM, Michael Orlitzky wrote:
> On 06/11/2013 07:26 P
OK Michael, thanks for this.
But my problem was
solve(sin(x)/cos(x)==1,x,to_poly_solve="force")
returns an empty solution set, implying that there are no solutions
when in fact there are. Surely this is misleading?
Worthy of a bug report? IDK
best wishes
Robin
On Wed, Jun 1
#x27;force')
[x == 1/4*pi + pi*z219]
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though only the first line is executed when
I hit shift-return. This is almost repeatable for me; sometimes it
works as expected but I can't see why. The only way I can execute all
the lines reliably is to cut-and-paste them one at a time into
successive cells.
Can anyone advise?
--
OK, thanks for this. It works!
Where would I have found this distinction in the documentation?
Thanks
Robin
On Mon, Jan 21, 2013 at 10:37 PM, P Purkayastha wrote:
> On 01/21/2013 05:01 PM, robin hankin wrote:
>>
>> Hello. kubuntu linux, sage 5.5
>>
>> I want to d
6)(11,27)(17,33)(18,34)(19,35)
sage: f(u)
---
TypeError
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Braun wrote:
> The plot file format is determined by the file extension:
>
> sage: plot(ln).save('my-ln-plot.pdf')
>
>
> On Tuesday, July 31, 2012 4:38:44 PM UTC-4, robin wrote:
>
>> How do I produce high-res graphics with sage? The best I can do is
>>
zed output that
can go in my paper.
Can anyone advise?
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For more opti
thanks everyone, got it. As it happens I know the quantile function so
this solution is fine for me.
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do I make sage do what I want?
thanks
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For more options, visit this grou
users, so
it might be good to document it somewhere.
Best wishes
Robin
On Wed, Jul 18, 2012 at 3:33 PM, Dima Pasechnik wrote:
>
>
> On Tuesday, 17 July 2012 10:20:16 UTC+8, robin wrote:
>>
>> I am using firefox 13.0.1 with sage 5.1 and have exactly the same problem
>&
I am using firefox 13.0.1 with sage 5.1 and have exactly the same problem
On Sunday, 8 May 2011 19:06:00 UTC+12, Keshav Kini wrote:
>
> This was discussed on the IRC channel yesterday. Harmor was using Firefox
> 4, and when he tried it with Chromium it worked, apparently. I also thought
> it s
It's (my) incompetence, not evil, that's causing the
problems.
Robin
On Sat, Jun 16, 2012 at 10:12 AM, William Stein wrote:
> On Fri, Jun 15, 2012 at 3:01 PM, ulfarsson wrote:
> > Hi,
> >
> > the front page of sagenb.org displays a message saying that evaluat
currently defined".
Of course, B(.,.) is the beta function and "beta?" gives the help page. But
it is potentially very confusing to be given an answer in terms of a
function (B) which
(apparently) is not documented. Couldn't sage somehow redirect the user
to the help page
I have the same problem on kubuntu 11.10.
I fixed it with:
sudo apt-get install libssl0.9.8
which worked for me.
best wishes
Robin
On Jan 25, 9:35 pm, Ondřej Čertík wrote:
> On Tue, Jan 24, 2012 at 9:58 PM, William Stein wrote:
>
> > On Tuesday, January 24, 2012, Ondřej Č
wow, thank you. I would not have thought of using list comprehensions here.
Is there a way to do
[s for s in sol if ]
thanks
Robin
On Fri, Dec 9, 2011 at 11:48 AM, achrzesz wrote:
>
>
> On Dec 8, 9:36 pm, robin hankin wrote:
>> hello
>>
>> I have been playing
solution (viz a=b=1) is not consistent with my assumption()?
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For more
Hello Justin
thanks for this...I'm more familiar with the R help list, where
there's a very heavy emphasis on not wasting bandwidth,
and replies not much less terse than 'rtfm' are very common.
So, I'm finding the more tolerant atmosphere in sage to take some
getting use
last)
/Applications/Sage-4.7.1-OSX-64bit-10.6.app/Contents/Resources/sage/ in ()
TypeError: 'str' object is not callable
I'm beginning to think I should reinstall from scratch (or indeed
compile my own).
best wishes
Robin
On Mon, Sep 5, 2011 at 9:40 AM, Justin C. Walker
under the GNU Public License. See the file COPYING.
Dedicated to the memory of William Schelter.
The function bug_report() provides bug reporting information.
(%i1)
x.simplify() seems to hang too.
Best wishes
Robin
On Sat, Sep 3, 2011 at 12:10 AM, kcrisman wrote:
>
>
> On Sep 1, 11:19
Hi.
sage 4.7.1, macosx 10.6.8, firefox 5.0.
When I use the sage notebook the following happens:
var('x')
integral(exp(x),x)
Traceback (click to the left of this block for traceback)
...
RuntimeError: ECL says: THROW: The catch MACSYMA-QUIT is undefined.
What's the deal?
t be an integer, with
"small" being Good. This would make sense because the psi
function is difficult to evaluate.
Is this crazy enough for you? ;-)
best wishes; keep me posted!
Robin
On Jul 14, 3:23 am, Michael Orlitzky wrote:
> On 07/12/11 22:07, robin wrote:
>
> > Hi a
following list
of identities
be added to sage's list, so that this simplification works nicely".
best wishes
Robin
On Jul 13, 10:11 am, robin hankin wrote:
> Hi.
>
> The psi function is defined over the entire complex plane.
>
> But sage doesn't seem to know a
plify()
[complicated expression deleted].
to give zero.
How do I tell sage to simplify this expression?
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sage-su
OK so it's a bug in maxima. Quite a bad one, I'd say! The answer
given by maxima is unequivocal, and wrong.
What is the procedure for getting this fixed? Do I write to the
maxima developers or is there a mechanism to upload such reports
from the sage community?
Robin
On Tue, Jul 1
Hi.
What's going on here?
y=(x^2)*exp(x)/(1+exp(x))^2
integrate(y,(x,-infinity,infinity))
0
Sage gives me zero here.
But 'y' is strictly positive everywhere, and I happen to know
that the analytic answer is pi^2/3.
What's going on here?
--
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Uncertain
Hi.
When I type
integrate(dirac_delta(x),x,-1,1)
I expected to get 1, as the documentation clearly implies.
But instead I get a symbolic answer.
How do I make sage return 1?
cheers
Robin
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it just annoy everyone?
best wishes
Robin
On Thu, Jul 7, 2011 at 8:55 PM, John Cremona wrote:
> With d=c-a, not even d.simplify_radical() gives 0.
>
> Simplifying "nested radicals" is a notoriously hard problem in
> symbolic computer algebra. As this example shows (u
ated 'c' to the simple 'a'?
Suppose someone gave me 'c'. How can I instruct sage to simplify
it until it gives me 'a'?
One more question: I learned a lot from the pointer you gave me to the Sage
reference manual. Is it available as a PDF somewhere?
thank
Hi Jason
thanks for this ( I did mean 'c' not 'y'; apologies).
I didn't know about QQbar().
Why does QQbar(c) return what appears to be a numerical result, with a
question mark after it?
thanks again
Robin
On Thu, Jul 7, 2011 at 4:43 PM, Jason Grout wrote:
> On
y.simplify_full()
doesn't do what I want.
How do I make sage recognize that a=c, other than using n()?
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do what I want.
How do I make sage recognize that a=c, other than using n()?
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Fo
Hi.
thank you for this.
OK, so it's "promoting" the coefficients to a more general set?
Where would a sage newcomer like me find documentation for this?
cheers
Robin
On Mon, Jul 4, 2011 at 3:25 PM, D. S. McNeil wrote:
>> My understanding was that 'x' was the
nomials over QQ, i.e. the rationals. So how come
the polynomial
has coefficients which are not rational?
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s
Hello Dan
thanks for this. I suppose "dependency" isn't quite the right word here.
The error message below is cut-and-pasted from the output of 'make';
at one point it asks me to email sage-devel, but perhaps this list
is better for now!
best wishes
Robin
Host sys
forum than the sage-support mailing list?
Thanks again
Robin
On Thu, Sep 16, 2010 at 7:17 PM, Marshall Hampton wrote:
> Your error message looks exactly like the one reported here a few
> months ago:
>
> http://groups.google.com/group/sage-support/browse_thread/thread
sage/interfaces/gap.py
in _start(self)
885 self._session_number = n
886 return
--> 887 raise RuntimeError, msg
888
889 if self.__use_workspace_cache and self.__make_workspace:
RuntimeError: Unable to start gap
Error importing i
/3) -
10/3]
sage: N(roots)
but this returns an error ("too many values to unpack").
The best I can do is
N(roots[1].rhs())
but this is just one at a time. How do I make N() operate on all of roots?
Or is there a much neater way of accomplishing the same thing?
cheers
rksh
f a way
of working with sage that this option will break? I'm hoping
to understand why you expert sage users chose the default
as you did.
best wishes
Robin
On Mon, Aug 23, 2010 at 12:07 PM, Simon King wrote:
> Hi Robin,
>
> On 23 Aug., 12:58, robin hankin wrote:
>> Bu
y question: Now that I know implicit_multiplication() exists,
I can search for it and get documentation about it.
But, if I didn't know it existed, how could I possibly have found it?
(give me a pointer to a FAQ!)
best wishes
rksh
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& a == 0) || (a != 0 && x == b/a)
best wishes
rksh
On Fri, Aug 20, 2010 at 1:14 AM, kcrisman wrote:
>
>
> On Aug 19, 5:39 pm, robin hankin wrote:
>> Hello Simon
>>
>> thanks for this. One problem
>> with the solution you mention is that I can&#x
Hello Simon
thanks for this. One problem
with the solution you mention is that I can't do the
general case. What I need is the sage equivalent
of mathematica's Reduce[] function.
Is there one?
rksh
On Thu, Aug 19, 2010 at 10:06 PM, Simon King wrote:
> Hi!
>
> On 19
ird, yet solve() returns empty.
What am I missing?
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For more options, vi
o a README for
windows newbies).
Thanks again
Robin
On Sat, Jul 10, 2010 at 7:16 AM, William Stein wrote:
> On Sat, Jul 10, 2010 at 8:09 AM, robin hankin wrote:
>> Hi
>>
>> I am trying to install Sage on windows 7
>> and have installed Oracle VM Virtual Box;
>>
chine using the VirtualBox software, wait
for the virtual machine to boot up, then type notebook at the prompt.
"
However, the VM box gives me an error: "FATAL: No bootable medium found!
System halted".
I don't know how to fix this.
Anyone got any suggestions?
thanks in ad
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