On Aug 30, 7:46 pm, Robert Dodier <[EMAIL PROTECTED]> wrote:
> From the direction this discussion has taken I'm guessing that
> nobody here is aware that selective evaluation is trivial in Lisp,
> and Maxima. In both cases a single quote marks stuff that
> isn't evaluated. Maxima further marks a d
On Aug 30, 2008, at 7:46 PM, Robert Dodier wrote:
This kind of stuff yanks my chain in a bad way, unfortunately.
I gather it is more interesting to reinvent the wheel than learn
how to use existing, unfamiliar wheel technology. What makes
it worse is that there is talk of copying Maple and Math
Hello,
I had a computer freeze-up while using Sage notebook, and now it is
acting funky. Between sessions, it will forget the names I have given
to worksheets and will resurrect worksheets that I have thrown out. It
also sometimes creates duplicate worksheets. I have tried cleaning out
all of the
> This kind of stuff yanks my chain in a bad way, unfortunately.
> I gather it is more interesting to reinvent the wheel than learn
> how to use existing, unfamiliar wheel technology. What makes
> it worse is that there is talk of copying Maple and Mathematica
> notation, which both have all sorts
Robert Bradshaw wrote:
> On Fri, 29 Aug 2008, Jason Grout wrote:
> > Jason Merrill wrote:
> >> The Mathematica syntax is Hold[Integral[x,{x,0,1}]]. This remains
> >> unevaluated until it is wrapped with an Evaluate[]. The nice thing
> >> about this syntax is that it works for any kind of expres
> Btw, as usual, I would learn from what Mathematica is doing, because
> the Hold(...) stuff seams really simple to me. So maybe the evaluate
> keyword should be used in Python. We use the "evaluate" keyword
> inconsistently in sympy so far.
Here is Mathematica's documentation for Hold:
http://r
On Fri, Aug 29, 2008 at 11:46 AM, David Joyner <[EMAIL PROTECTED]> wrote:
>
> On Fri, Aug 29, 2008 at 3:07 AM, Burcin Erocal <[EMAIL PROTECTED]> wrote:
>>
>> On Thu, 28 Aug 2008 15:28:03 -0400
>> Tim Lahey <[EMAIL PROTECTED]> wrote:
>>
>>> Hi,
>>>
>>> Maple has a really useful feature of inert inte
Thank you for all the help.
With your input, I managed to do what I wanted in Sage, and
can now finish my paper before the deadline:)
regards,
Geir Egeland
phone +47 906 40 507
email: [EMAIL PROTECTED]
PhD Candidate
University of Stavanger
and
Research Scientist
Telenor R&I
On 30 Aug 2008, at
Hi,
Thank u everybody for your help.
i'm going to use Maxima and Maple to compute my expression.
Raouf
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On Sat, Aug 30, 2008 at 11:15 AM, Robert Dodier <[EMAIL PROTECTED]> wrote:
> Dunno if it matters but maybe you can handle this directly in Maxima.
>
> foo : sum (1/(k + m)^3, k, 1, inf);
>
> load (simplify_sum);
> simplify_sum (foo);
> => -psi[2](m+1)/2
>
> ev (%, m=2);
> => zeta(3)-9/8
>
> ev (
Raouf wrote:
> I am a newbie in sage and i want to compute an infinite sum with
> parameter m, like sum(1/(k+m)^3) k=1 to infinity.
Dunno if it matters but maybe you can handle this directly in Maxima.
foo : sum (1/(k + m)^3, k, 1, inf);
load (simplify_sum);
simplify_sum (foo);
=> -psi[2](m+1
On Sat, Aug 30, 2008 at 4:34 PM, Ondrej Certik <[EMAIL PROTECTED]> wrote:
> On Sat, Aug 30, 2008 at 6:06 AM, tkeller <[EMAIL PROTECTED]> wrote:
>>
>> I asked this question myself a few months ago, and the easiest 2
>> solutions seem to be utilizing sympy or maxima.
>>
>> Via sympy it is:
>> import
On Sat, Aug 30, 2008 at 6:06 AM, tkeller <[EMAIL PROTECTED]> wrote:
>
> I asked this question myself a few months ago, and the easiest 2
> solutions seem to be utilizing sympy or maxima.
>
> Via sympy it is:
> import sympy
> sympy.var('x')
> print sympy.sum(2**(-x), (x, 1, oo))
>
> I'm taking this
Hi
Thank u Thomas for these idea.
In fact i divide the expression that i want to estimate into 2 part,
the first( where we found the infinite sum with parameters) i can
calculate it with Maple but i don't know how to use Maple into the
Sage's notebook.
And the second part of expression i must do i
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