comer.dun...@gmail.com wrote:
Aaron,
Thanks very much. The material there seems very useful.
Comer
On May 26, 9:43 pm, "Aaron S. Meurer" wrote:
git can help you find where things came from. Using git log -S"r+=str(idx)" —all and
git describe , it looks like it used to be in an
example
Aaron,
Thanks very much. The material there seems very useful.
Comer
On May 26, 9:43 pm, "Aaron S. Meurer" wrote:
> git can help you find where things came from. Using git log -S"r+=str(idx)"
> —all and git describe , it looks like it
> used to be in an example file called tensors.py that w
Alan,
Thanks for the reference. No, I don't own a copy of his book but the
abstract index notation is part and parcel of doing general
relativity. This appears to be a recent treatment, but this has been
around many years. I may in fact buy his book as it seems worth taking
a look at just to see
Alan,
Thanks _very_ much for your implementation. I will study it and think
about doing additional steps.
Comer
On May 27, 9:12 am, Alan Bromborsky wrote:
> comer.dun...@gmail.com wrote:
> > Hi Ondrej,
>
> > This code is taken from something you put together which was called
> > tensors.py in
expand() only expands the denominator when it gets the deep=True flag (because
it is inside a Pow, namely, -1). So I guess factor needs to know to use that
flag when it gets frac=True.
The last item is a printing issue, and has nothing to do with factor or expand.
Aaron Meurer
On May 27, 20
Is the following behavior correct for factor?
>>> from sympy import *
>>> var('x y')
(x, y)
>>> eq = x*(1+2*y+y**2)+1+2*y+y**2
Here we show what happens with and without expand being set:
>>> factor(eq,expand=0)
1 + 2*y + x*(1 + 2*y + y**2) + y**2
>>> factor(eq,expand=
On Thu, May 27, 2010 at 4:11 AM, jegerjensen wrote:
> I started my blog at http://ojensen.wordpress.com/
Thanks, I have updated the list. It is now complete.
Ondrej
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I'm working on something similar, but the Scheme code is quite difficult to
read and it is not fully implemented, there are some errors that are noted
in the code to occur. I imagine these are fixable. I'm working specifically
on differential geometry in general, not just tensors.
Michael
On Thu,
Alan Bromborsky wrote:
comer.dun...@gmail.com wrote:
Hi Ondrej,
This code is taken from something you put together which was called
tensors.py in 0.6.3, at least that is where I found it on my system,
since I still have 0.6.3 on my disk. I am currently using 0.6.6.6. I
extracted the imports
comer.dun...@gmail.com wrote:
Hi Ondrej,
This code is taken from something you put together which was called
tensors.py in 0.6.3, at least that is where I found it on my system,
since I still have 0.6.3 on my disk. I am currently using 0.6.6.6. I
extracted the imports and the class defs from th
I started my blog at http://ojensen.wordpress.com/
Øyvind
On 27 Mai, 02:22, Ondrej Certik wrote:
> Hi,
>
> the GSoC has started this Monday. All GSoC students are required to
> blog at least once a week (but of course you can blog more often:),
> the deadline is each Friday midnight PST (which i
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