I'm having a bit of a strange issue, I'm working on something where I
need to find the rank of a somewhat large matrix over a finite field.
I recall testing sage's capabilities when I was looking at how I was
going to take the rank and remember sage taking the rank of matrices
much larger than the
On 05/08/11 22:00, kcrisman wrote:
Great! We always welcome new help of any kind :)
Here my (first) ticket submission:
http://trac.sagemath.org/sage_trac/ticket/11653
hope its OK
I will try to have a look carefully to that code, to see if I could
provide any help!
Thanks!
Jose
>
> >> You can help sage by filing a bug report.
>
> I would be willing to 1) submit a bug report, and even 2) try to solve
> it if somebody would assist me with whole process of submitting a track
> (maybe in #sagemath channel on freenode. That would be a fantastic
> opportunity to collaborate w
On 05/08/11 18:20, kcrisman wrote:
On Aug 5, 12:07 pm, Nils Bruin wrote:
On Aug 5, 8:41 am, Jose Guzman wrote:
In either case, Sage returns the same error:
TypeError: unable to make sense of Maxima expression
'v(t)=-e^-(t*gL/cm)*(at(integrate((EL*gL+signum(t-5)-signum(t-13))*e^(t*
I opened a ticket on trac regarding this problem:
http://trac.sagemath.org/sage_trac/ticket/11652
* rafaeldleon [2011-07-28 18:00:25 -0700]:
> Dear Julian,
>
> Thank you very much for your help. It seems like an error to me too.
> I am using your solution in my code and is working nicely.
>
>
On Aug 5, 11:00 am, kcrisman wrote:
> On Aug 5, 9:40 am, kcrisman wrote:
>
>
>
>
>
> > On Aug 5, 8:58 am, kcrisman wrote:
>
> > > Thanks, Maik, for this report. Yes, our Maxima conversion seems to be
> > > at fault.
>
> > > sage: var('y')
> > > y
> > > sage: (y==x).log()
> > > log(y == x)
> >
On Aug 5, 12:07 pm, Nils Bruin wrote:
> On Aug 5, 8:41 am, Jose Guzman wrote:
>
> > In either case, Sage returns the same error:
> > TypeError: unable to make sense of Maxima expression
> > 'v(t)=-e^-(t*gL/cm)*(at(integrate((EL*gL+signum(t-5)-signum(t-13))*e^(t*gL/
> > cm),t),[t=0,v(t)=-65])-i
On Aug 5, 8:41 am, Jose Guzman wrote:
> In either case, Sage returns the same error:
> TypeError: unable to make sense of Maxima expression
> 'v(t)=-e^-(t*gL/cm)*(at(integrate((EL*gL+signum(t-5)-signum(t-13))*e^(t*gL/cm),t),[t=0,v(t)=-65])-integrate((EL*gL+signum(t-5)-signum(t-13))*e^(t*gL/cm),t)+
Hi everybody,
I am starting to learn how to solve ODEs analytically/numerically with
Sage, which to my understanding, implies using Maxima functions. I
followed the docu here:
http://maxima.sourceforge.net/docs/manual/en/maxima_22.html.
Now, i wanted to solve analytically the following equa
On Aug 5, 9:40 am, kcrisman wrote:
> On Aug 5, 8:58 am, kcrisman wrote:
>
>
>
>
>
> > Thanks, Maik, for this report. Yes, our Maxima conversion seems to be
> > at fault.
>
> > sage: var('y')
> > y
> > sage: (y==x).log()
> > log(y == x)
> > sage: (y==x).log().simplify() # just sends to Maxima a
On Aug 5, 8:58 am, kcrisman wrote:
> Thanks, Maik, for this report. Yes, our Maxima conversion seems to be
> at fault.
>
> sage: var('y')
> y
> sage: (y==x).log()
> log(y == x)
> sage: (y==x).log().simplify() # just sends to Maxima and back to Sage
> log(y) == log(x)
> sage: (y==x).exp()
> e^(y
Thanks, Maik, for this report. Yes, our Maxima conversion seems to be
at fault.
sage: var('y')
y
sage: (y==x).log()
log(y == x)
sage: (y==x).log().simplify() # just sends to Maxima and back to Sage
log(y) == log(x)
sage: (y==x).exp()
e^(y == x)
sage: (y==x).exp().simplify() # just sends to Maxima
I just came across that while
sage: (y == x).log().simplify_exp()
log(y) == log(x)
works fine log's inverse function doesn't
sage: (y == x).exp().simplify_exp()
ERROR: An unexpected error occurred while tokenizing input
...
TypeError: unable to make sense of Maxima expression 'e^(y=x
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