Hello sagers,
i have a question about symbolic matrix algebra.
i would like to simplify an expression where variables are matrices,
without specifying how the matrices look like. is there any way to do that
in sage?
for example:
i would like A + A = 2A
where A is my variable, without entering v
On Monday, August 4, 2014 1:49:42 PM UTC-7, John H Palmieri wrote:
>
>
> I can complete the command (by typing ")" then RET), and it will execute
> and give me an error because "basis" doesn't take any arguments. Or I can
> type "]" then RET and get a SyntaxError. Is there any way to get back to
This is a problem involving polynomials of SU(2) operators (or matrices)
multiplied by scalar variables (e.g. x, y, etc.).
I'm trying to do something that I think should be relatively simple. It is
a physics problem involving two
spins A and B that are represented by components (Ax,Ay,Az) and (
Hi John,
On 2014-08-04, John H Palmieri wrote:
> Is there any way to get back to
> the Sage prompt without executing the command?
>
> Should we be configuring IPython or readline or something differently to
> allow this?
+1
I find this new behaviour of ctrl-c quite annoying. There should be
Suppose I'm at the Sage command line and I type
sage: V = QQ^4
sage: V.basis
I am immediately returned to the Sage prompt, with a "KeyboardInterrupt"
message. Great, just what I want. Now suppose I do
sage: V = QQ^4
sage: V.basis(0
and then I hit return. (I meant to type ")"
On Mon, Aug 4, 2014 at 12:08 PM, Kevin Buzzard
wrote:
> Ooh I'm _really_ glad I asked now. Many thanks William.
>
> The first time I wanted such a loop, I was beta testing your magma modular
> symbols code in 2000 or so :-)
I discovered the programming language Python around then in order to
scri
Ooh I'm _really_ glad I asked now. Many thanks William.
The first time I wanted such a loop, I was beta testing your magma modular
symbols code in 2000 or so :-)
Kevin
On Monday, 4 August 2014 15:01:05 UTC+1, William wrote:
>
> On Mon, Aug 4, 2014 at 5:11 AM, Kevin Buzzard > wrote:
> > TL;DR:
> I encourage you to read the source code of this @parallel stuff --
> it's only about 2 pages of actual code,
> which I wrote at some Sage days as my project back in maybe 2008.
Will do, thanks again!
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On Mon, Aug 4, 2014 at 8:48 AM, Christian Stump
wrote:
> Thanks, William!
>
>> It absolutely will use two additional *processes*, as you might see by
>> watching with htop, top, or using ps.
>
> Is it right that the master process is creating all the subprocesses?
> I'd suspect I don't quite see t
Thanks, William!
> It absolutely will use two additional *processes*, as you might see by
> watching with htop, top, or using ps.
Is it right that the master process is creating all the subprocesses?
I'd suspect I don't quite see the other processes in action simply
because they are there only fo
On 4 August 2014 04:56, Nasser M. Abbasi wrote:
> I am a sage newbie so please be easy on me.
Nasser,
Others may not know this, but I know you are an expert in Mathematica,
as I recall your name from the Mathematica forums. I see you now have
38 demonstrations on the Wolfram Research site.
http
On Mon, Aug 4, 2014 at 2:38 AM, Christian Stump
wrote:
> Hi there,
>
> I wonder how to parallelize the following scenario.
>
> I have a method that initiates a (not very simple) data strucure and then
> runs a for-loop (of, say, length 1,000-20,000) to populate that data
> structure with data. The
On Mon, Aug 4, 2014 at 5:11 AM, Kevin Buzzard
wrote:
> TL;DR: I am going to write a bash loop which loops through 1<=N<=1 and
> feeds the number N into a function in a sage session, one session per N.
Has
> anyone written a robust way of doing this already?
Yes, I implemented a robust way t
Delete the readline libraries that Sage built (local/lib/libreadline*)
On Monday, August 4, 2014 1:54:34 PM UTC+1, Johan S. R. Nielsen wrote:
>
> Hi everyone,
> When building Sage 6.2, I'm getting the following error in NTL and GFanh:
> symbol lookup error: sh: undefined symbol: rl_signal_event
Hi everyone,
When building Sage 6.2, I'm getting the following error in NTL and GFanh:
symbol lookup error: sh: undefined symbol: rl_signal_event_hook
In the case of GFan it comes a hundred times, like so:
...
ln -s gfan gfan_groebnercone
sh: symbol lookup error: sh: undefined symbol: rl_
TL;DR: I am going to write a bash loop which loops through 1<=N<=1 and
> feeds the number N into a function in a sage session, one session per N.
> Has anyone written a robust way of doing this already?
>
>
This may be naive, but would using the parallel module be helpful? Is this
a mas
TL;DR: I am going to write a bash loop which loops through 1<=N<=1 and
feeds the number N into a function in a sage session, one session per N.
Has anyone written a robust way of doing this already?
Gory details: I have memory man
Hi there,
I wonder how to parallelize the following scenario.
I have a method that initiates a (not very simple) data strucure and then
runs a for-loop (of, say, length 1,000-20,000) to populate that data
structure with data. The computations in each loop is not trivial, but
fairly optimized u
>
>
>>> The underlying package, maxima, doesn't exhibit this tolerant behaviour:
>>
>> (%i10) desolve(diff(y(x),x)+y(x)=1,y(z));
>> desolve: can't handle this case.
>>
>> however, as you can see when you type "desolve??" (which shows the
>> source), the sage implementation does a lot of
On Monday, August 4, 2014 2:12:28 AM UTC-5, Nils Bruin wrote:
>
> On Sunday, August 3, 2014 11:53:00 PM UTC-7, Nasser M. Abbasi wrote:
>>
>> But the answer makes no sense. So what is the role of y(z) in here? If I
>> omit the second argument, it complains
>>
>
> The question you ask of sage does
On Sunday, August 3, 2014 11:53:00 PM UTC-7, Nasser M. Abbasi wrote:
>
> But the answer makes no sense. So what is the role of y(z) in here? If I
> omit the second argument, it complains
>
The question you ask of sage doesn't really make sense either, so it's
perhaps not worth really worrying ab
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