Hi all,
Is anybody planning to be at EuroScipy 2014 next week in Cambridge?
https://www.euroscipy.org/2014/
Any Sage or SageMathCloud projects that could benefit from an impromptu
sprint?
All the best,
Joris
--
You received this message because you are subscribed to the Google Groups
"s
This is a very nice package!
Are you aware of #9439 (hyperbolic geometry) and #10132 (surfaces embedded
> in R^3) which are somewhat related?
>
>
As for #10132, I can see the functionality of that patch being subsumed
into this package, once the extrinsic manifold geometry has been
implemented
> But the example in my original message works -- this really confuses me.
> Clearly, simplify_trig invokes maxima to do the simplification, so why does
> setting this flag in pynac make it work? Are functions of real variables
> treated differently from functions taking a complex argument?
>
Hi Michael,
Thanks for your message. I'm still a little confused about the way Sage
handles assumptions, can you maybe shine your light on this?
On Monday, July 1, 2013 8:55:43 PM UTC+1, Michael Orlitzky wrote:
>
>
> > sage: u = var('u')
> > sage: assume(u, 'real')
>
> This makes an assumptio
On Friday, February 15, 2013 11:31:41 AM UTC, Julius wrote:
>
>
> With sage 5.6
> sage: assume(x, 'real')
> sage: (abs(sin(x))^2).simplify_full()
> abs(sin(x))^2
>
> For trigonometric simplifications, this is very inconvenient. For example
> sage: (abs(sin(x))^2 + abs(cos(x))^2).sim
y, June 28, 2013 3:36:24 PM UTC+1, Dox wrote:
>
> I could try to change something... However, What is the way to provide a
> patch? Is it through github?
>
> On Friday, 28 June 2013 09:36:47 UTC-4, Joris Vankerschaver wrote:
>>
>>
>> Symbolic expressions hav
implify_radical not really being a simplify_ method, and
this should be fixed once #11912 and #12737 are approved. Therefore I won't
open a new ticket, but I'll just add to the discussion of those patches.
All the best,
Joris
On Friday, June 28, 2013 1:09:49 PM UTC+1, Joris Vankerschaver
> Symbolic expressions have a .is_trivial_zero() method which is more
> suitable for use here. It doesn't try anything advanced so it has
> predictable runtime.
>
I just wanted to say that I had no idea that this function existed when I
wrote that code, and it seems like a good idea to use i
Hi all,
I've been out of the Sage loop for a while, but upon upgrading to 5.10, I
found that Maxima seems to choke on the following innocuous code which used
to run fine. I'm posting this here, because this issue came up while I was
working on #10132, and also because it affects usability.
't any code out there that exploits that
> > though, so I would vote to not bother with a deprecation warning.
> >
> > -Marshall Hampton
> >
> >
> > On Tuesday, September 25, 2012 5:28:26 AM UTC-5, Joris Vankerschaver
> wrote:
> >>
> &g
With best wishes,
Joris Vankerschaver
--
You received this message because you are subscribed to the Google Groups
"sage-devel" group.
To post to this group, send email to sage-devel@googlegroups.com.
To unsubscribe from this group, send email to
sage-devel+unsubscr...@googlegroups.com.
Hi Abraham,
This sounds like a great project -- I've always wanted to read the
Bryant/Griffiths books on EDS but I've always been too lazy to do the
computations myself and get a proper grip on the subjects. Such a
Sage package could be a great help.
I'm not entirely happy with the way that the
ith minimal overhead and
> # no type checking.
> cdef FreeModuleElement_generic_dense x
> x = PY_NEW(PY_TYPE(self))
>
> David
>
> On Sat, Jun 25, 2011 at 13:56, Joris Vankerschaver <
>
>
>
>
>
>
>
> joris.vankerscha...@gmail.com> wrote:
> >
Dear all,
I'm playing around with #11335 which was included in Sage
4.7.1.alpha3. In this patch, I added a symbolic vector class, with
the aim of providing simplification methods that act elementwise on
symbolic vectors. The symbolic vector class derives from
sage.modules.free_module_element.Fre
On May 5, 2:56 am, Guilherme wrote:
> IDA is shown as the last on the series DASSL -> DASPK -> IDA.
> Sundials is C ++(?) coded.
>
> Could you handle Mass matrix with DASSL?
DASSL handles implicit ODEs of the form F(t, x, x') = 0, so I think it
would work for non-constant mass matrices too, b
On May 4, 10:04 pm, Thierry Dumont wrote:
> Do you mean that it is possible to define the RHS as a Cython *callback*
> function? or is there an other trick ? Can you give me a pointer to that ?
The code can for instance be found in the file sage/gsl/ode.pyx (the
gsl directory has other classes
On May 3, 11:23 pm, Thierry Dumont wrote:
> 1) it takes time to do this,
> 2) we have to solve the callback problem: such program make a lot of
> callbacks (to the rhs of the system): AFAIK, there are no simple method
> to make this work fast enough (the ODE solver in Sage is extremely slow,
>
On 3 mei, 15:13, Guilherme wrote:
> Is there any DAE solver readily available to Sage?
>
I wrote a C++ wrapper around DASSL some time ago, but unfortunately
this was for personal use and I never put any time into writing
documentation and making sure that all the options work well, etc.
I don
Dear all,
Has there been any effort so far in wrapping the root-finding routines
in GSL? Or are there better alternatives for numerical root finding
of vector-valued functions in Sage? All I could find is this "mission
statement", but it doesn't look as if this was ever completed (I'd
love to be
On 10 dec, 13:25, Jason Grout wrote:
> 3. If you *really* want to use Q like you did above, you could do this:
>
> sage: Q=var('x,y,z')
> sage: f(*Q)=(x-z,y-z)
> sage: f
> (x, y, z) |--> (x - z, y - z)
>
This is exactly what I need, but thanks also for the explanation of
what goes on behind th
Dear all,
Is there a reason why Sage doesn't allow you to define vector
functions using the following short hand:
sage: Q = var('x, y, z')
sage: f(Q) = [x - z, y - z]
sage: f
Q |--> (x - z, y - z)
I would have expected/liked the last line to be
sage: f
(x, y, z) |--> (x - z, y - z)
This would
Dear all,
I wanted to compute some good old Bessel functions, and came upon the
following behavior. I did not want to open trac tickets for all of
this, since I didn't know (apart from 1) whether this behavior is
intentional or not.
1) Sage uses a function "Bessel" which does some input checking
22 matches
Mail list logo
