I worked it out by hand to be x=2 or x=42. I get nothing useful back
from sage. What am I missing?
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On Tue, Jan 20, 2009 at 9:57 AM, Carl Witty wrote:
>
> On Jan 19, 7:50 pm, William Stein wrote:
>> Any commutative algebra computer computation over QQbar can be reduced
>> to a computation over a specific absolute number field, since there
>> are only finitely many symbols in the input to the c
On Tue, Jan 20, 2009 at 4:22 PM, Raouf wrote:
>
> Hi,
> Recently, i wrote this program to Sage vmware-Windows, but i have the
> error Traceback (most recent call last)!!!
>
Can you please attach the code in a .txt file as an email attachment, or attach
a sage worksheet? I tried just pasting the
On Tue, Jan 20, 2009 at 8:03 PM, davidp wrote:
>
> I will be teaching abstract algebra this semester and want to
> introduce my students to Sage and GAP. I have installed
> gap_packages-4.4.10_6, but I am still having trouble with
> documentation:
>
>
Hello all,
I apologize if I am repeating someone, but I figure this question is a big one
worth bringing up again. If I want sage to see some publicly available python
libraries, it seems that I can't just drag and drop them into my
"site-packages" folder as eggs as I thought I might. I am o
To get the gap console, it may be even easier to just run
sage -gap
- Robert
On Jan 20, 2009, at 8:03 PM, davidp wrote:
>
> I will be teaching abstract algebra this semester and want to
> introduce my students to Sage and GAP. I have installed
> gap_packages-4.4.10_6, but I am still having tr
I will be teaching abstract algebra this semester and want to
introduce my students to Sage and GAP. I have installed
gap_packages-4.4.10_6, but I am still having trouble with
documentation:
--
| Sage Version 3.2.3, Release Date
On Tue, Jan 20, 2009 at 9:30 PM, wrote:
> In a message dated 1/20/2009 9:05:58 P.M. Eastern Standard Time,
> wdjoy...@gmail.com writes:
>
> sage: t = var('t')
> sage: x = function('x',t)
> sage: DE = lambda y: diff(y,t,t) + y
> sage: f = eval(desolve_laplace(DE(x(t)), ["t","x"], [0,1,0]))
> sage
In a message dated 1/20/2009 9:05:58 P.M. Eastern Standard Time,
wdjoy...@gmail.com writes:
sage: t = var('t')
sage: x = function('x',t)
sage: DE = lambda y: diff(y,t,t) + y
sage: f = eval(desolve_laplace(DE(x(t)), ["t","x"], [0,1,0]))
sage: f(t)
cos(t)
OK, I saw this in the DiffEqu te
In this case, the following works:
sage: t = var('t')
sage: x = function('x',t)
sage: DE = lambda y: diff(y,t,t) + y
sage: f = eval(desolve_laplace(DE(x(t)), ["t","x"], [0,1,0]))
sage: f(t)
cos(t)
(However, for other problems, this trick will not work so well.)
I know about the problem with deso
Dear All,
I did not find the answer to this elementary question elsewhere ---
please apologize if it was already answered.
I want to solve the 2nd order ODE y''(x)+y(x)=0 with initial
conditions y(0)=1, y'(0)=0. Obviously the solution is unique and it is
y(x)=cos(x). Let's try:
x=var('x')
y
Hi,
Recently, i wrote this program to Sage vmware-Windows, but i have the
error Traceback (most recent call last)!!!
"
borneSup=103196184763
S=0
Bm=0
alpha=1
p=2
m1=2
while (p^alpha)<=borneSup:
while (p^alpha) <=borneSup:
m1=p^alpha
if gcd(m1,6)==1:
mangoldt=ln(
Hi Jason,
thanks, you hit the nail on the head - I had not downloaded the latest
version..it works fine now, and I've learned a valuable lesson!
Ciaran
On Jan 19, 11:28 pm, Jason Grout wrote:
> c mullan wrote:
> > Hi all,
>
> > by general theory I know that an invertible transformation matrix
Hello Mike,
Paraview is an immensly powerful tool (based on vtk) that allows
visualizing huge datasets. The data can be located on a remote computer
running the Paraview server, to which you would connect with the
corresponding PV client. It is also Python scriptable, which is what I
want to
Hello Mike,
Paraview is an immensly powerful tool (based on vtk) that allows
visualizing huge datasets. The data can be located on a remote computer
running the Paraview server, to which you would connect with the
corresponding PV client. It is also Python scriptable, which is what I
want to
Hi Johannes,
On Tue, Jan 20, 2009 at 2:37 PM, Johannes Reichold
wrote:
>
> Many thanks for your answer Jaap!
> Unfortunately, building the experimental cmake failed (see error report
> below), however I have cmake installed on my system "outside" of SAGE. I
> will give it a try.
> Best,
> Johann
Many thanks for your answer Jaap!
Unfortunately, building the experimental cmake failed (see error report
below), however I have cmake installed on my system "outside" of SAGE. I
will give it a try.
Best,
Johannes
g++ -framework Carbon
-I/Applications/Science/sage/spkg/build/cmake-2.4.8/src/S
> So, I'm curious, did you envision your proposal to be to automate all
> bookkeeping in translating between QQbar (as presented to the user)
> and numbers fields (as fed to the backend Singular)? I think this
> would be very nice and useful.
That's exactly what i was thinking of. I know such
I am interesting in using Sage for economic modeling instead of
Matlab / Octave or R. Does anyone have experience with making this
move, and what were the pluses and minuses?
Thanks,
JR
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msafiri wrote:
> Hello everyone,
>
> I'm using SAGE to analyze the brain's vasculature. The vessel network
> is stored as a networkX graph and I would like to plot this graph from
> the SAGE command line (or notebook) using Paraview (http://
> www.paraview.org).
> I use OS X Leopard and I have th
> http://zine.pocoo.org/
Thanks for the tip. This is not so different than the homemade blog/
CMS's that I have been crafting with Django, certainly embedding Sage
would work in essentially the same way.
> It would be nice if @interact demonstrations and cells (both read-only
> and read-write)
> Just out of curiosity, what do you think of this:
>
>http://magma.maths.usyd.edu.au/calc/
>
> It wrote it years ago (before Sage), but could do a Sage version that
> would be included standard in sage.
Yes, something like that is relatively close to what I am thinking.
But, without autocomp
On Jan 19, 11:42 pm, "Timothy Clemans"
wrote:
> Is this similar to making it easy to post @interact demonstrations on
> webpages including a blog?
I'm not entirely sure what posting an @interact demonstration is.
But, you sound like you might be in the neighborhood of my little
idea. Ideally it
On Jan 19, 7:50 pm, William Stein wrote:
> Any commutative algebra computer computation over QQbar can be reduced
> to a computation over a specific absolute number field, since there
> are only finitely many symbols in the input to the calculation.
> Singular, etc., fully supports doing commutat
On Jan 19, 4:46 pm, Alex Raichev wrote:
> Hi everyone:
>
> I'm applying for a grant from the New Zealand government to fund some
> Sage development in the area of computational algebraic and analytic
> geometry. For part of the application i need to report on the 'state
> of the field'. Part of
On Jan 19, 1:43 pm, slabbe wrote:
> PROBLEM :
> In a list of vectors, I want to know if there is a pair of equal
> vectors.
>
> I have two solutions. The first to create an empty list L and append
> the vectors one per one. If a vector is already in L before adding it,
> then I found a pair of eq
kcrisman wrote:
>
>
> On Jan 20, 8:42 am, Harald Schilly wrote:
>> On Jan 20, 2:26 pm, John Mangual wrote:
>>
>>> Can sage be used offline? It doesn't seem to work if I am not
>>> connected to the Internet.
>> I've had the same problem, when i went offline the network was shut
>> down, but t
On Jan 20, 8:42 am, Harald Schilly wrote:
> On Jan 20, 2:26 pm, John Mangual wrote:
>
> > Can sage be used offline? It doesn't seem to work if I am not
> > connected to the Internet.
>
> I've had the same problem, when i went offline the network was shut
> down, but the Sage-Notebook needs a
Thank you everyone! :)
On Jan 20, 9:56 am, Jason Grout wrote:
> Tim Lahey wrote:
> > However, in my version of Sage (3.2), the functions simplify_full()
> > and simplify_trig() only seem to be defined on objects not as
> > general functions. Unless I'm missing something.
>
> I noticed that too.
Hello everyone,
I'm using SAGE to analyze the brain's vasculature. The vessel network
is stored as a networkX graph and I would like to plot this graph from
the SAGE command line (or notebook) using Paraview (http://
www.paraview.org).
I use OS X Leopard and I have the latest versions of both SAG
Hello everyone,
I'm trying to get SAGE to work with Paraview (http://
www.paraview.org/), an open source data analysis and visualization
application.
I simulate the cerebral blood flow and use SAGE to do some analysis of
the tree-structure of the brain's vasculature. So I have the vessel
network
Dear Pierre, dear John,
John H Palmieri schrieb:
> On Jan 19, 6:28�am, Pierre wrote:
> I think Simon King does some group cohomology computations with Sage,
> but I don't know exactly how he does it.
Indeed. One of my plans is to enrich my results by Steenrod actions,
and to provide the cohomol
On Jan 20, 2:26 pm, John Mangual wrote:
> Can sage be used offline? It doesn't seem to work if I am not
> connected to the Internet.
I've had the same problem, when i went offline the network was shut
down, but the Sage-Notebook needs a network. I don't know about a
solution, but could you ple
Can sage be used offline? It doesn't seem to work if I am not
connected to the Internet.
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thanks for your advice. I'll try to write a new class, but i won't try
to merge it into SAGE ! i'll just try to use reasonable names for the
methods, so that my examples remain compatible with whatever
improvement gets written for SAGE one day... for the "database" i'll
use a dict indexed by the "
Tim Lahey wrote:
> However, in my version of Sage (3.2), the functions simplify_full()
> and simplify_trig() only seem to be defined on objects not as
> general functions. Unless I'm missing something.
I noticed that too. Does anyone object to making at least simplify_full
a top-level function
Mike Hansen wrote:
> Hi Ben,
>
> On Tue, Jan 20, 2009 at 1:46 AM, ben wrote:
>> Are there any functions that are able to do further simplification?
>
> You're probably looking for trig_simplify():
>
> sage: a = cos(x)^2 + sin(x)^2
> sage: a.trig_simplify()
> 1
And two other ways to access eq
On Jan 20, 2009, at 4:46 AM, ben wrote:
>
> Hi,
> I tried this:
>
> sage: simplify(sin(x)^2+cos(x)^2)
> sin(x)^2+cos(x)^2
> Are there any functions that are able to do further simplification?
>
There are a couple of options if you do it this way:
f = sin(x)^2 + cos(x)^2
f.simplify_trig()
or
Hi Ben,
On Tue, Jan 20, 2009 at 1:46 AM, ben wrote:
> Are there any functions that are able to do further simplification?
You're probably looking for trig_simplify():
sage: a = cos(x)^2 + sin(x)^2
sage: a.trig_simplify()
1
--Mike
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To post
Hi,
I tried this:
sage: simplify(sin(x)^2+cos(x)^2)
sin(x)^2+cos(x)^2
Are there any functions that are able to do further simplification?
Thanks,
Ben
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