I actually think that computers are very healthy for mathematicians in
that regard. What's the use of a branch of mathematics whose functions
don't take user-defined numbers/shapes as their domain??
But given a user-defined set of points and a bunch of topological
transformations, I don't see why
Ah, that solves the mystery. Thanks, Nils.
As kcrisman suggested, functions should be able to automatically
coerce ints to Sage Integers.
--sriram.
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On Jul 28, 10:20 pm, sriram srinivasan wrote:
> Thanks much for your note.
>
> What surprises me is that sum() doesn't need coercion to sage integers
> when working with int-typed variables and numbers:
That is because the sage shell and notebook preprocess input such that
integer literals are ma
Thanks much for your note.
What surprises me is that sum() doesn't need coercion to sage integers
when working with int-typed variables and numbers:
sum(k, k, 1, 10) # ok
n = 10; sum(k, k, 1, n)# ok
I couldn't figure out the code path that looks for this difference.
How does the sum 'kno
>
> /Users/s/sw/sage/local/lib/python2.6/site-packages/sage/calculus/
> calculus.pyc in symbolic_sum(expression, v, a, b, algorithm)
> 499
> 500 if algorithm == 'maxima':
> --> 501 sum = "'sum(%s, %s, %s, %s)" %
> tuple([repr(expr._maxima_()) for expr in (expression, v, a, b)]
Dear Dr. Kirkby,
After taking the suggested actions, I still have errors as shown here:
% which ranlib
/usr/ccs/bin/ranlib
% ./sage
--
| Sage Version 4.5.1, Release Date: 2010-07-19 |
| Type notebook() for t
I forgot to add:
This too works OK.
k, n = var('k n')
sum(k, k, 1, n) # gives 1/2*n^2 + 1/2*n
It fails only when n is a loop iterator.
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F
Can someone please shed light on this?
The following works OK:
k, n = var ('k n')
sum(k, k, 1, 10) # ok. Gives 55
n = 10
sum(k, k, 1, n) # ok. Gives 55
But this gives an exception:
for n in range(1,10):
sum(k, k, 1, n)
/Users/s/sw/sage/local/lib/python2.6/site-packages/sag
On Jul 28, 1:58 pm, Simon King wrote:
> Anyway. While differential rings are certainly nice algebraic
> structures, I feel uncomfortable to think of a derivation as some
> calculus stuff.
The theory of Kaehler differentials does a pretty good job providing
differential calculus with sound algebrai
What sort of computations are you looking to do?
Point-set topology is by nature a rather un-computational area of
mathematics.
On Jul 28, 5:22 am, Alec Battles wrote:
> I've tried to find info about this. Can't find anything... Any
> suggestions/help?
>
> Alec
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Dear Dr. Kirkby,
Yes, the architecture is SPARC. I will try your suggestions from your previous
post and let you know what I find.
Thanks,
dan
From: Dr. David Kirkby
To: sage-support@googlegroups.com
Sent: Wed, July 28, 2010 2:20:28 PM
Subject: Re: [sage-su
On 07/28/10 07:54 PM, DWL wrote:
If this isn't the forum for asking install questions, by all means, stop reading
and tell me where to direct this question.
ImportError: ld.so.1: python: fatal:
/user/hilbert/bin/sage-4.5.1-Solaris_10_SPARC-sun4u-SunOS/local/lib//libgmp.so.3:
bad ELF flags va
On 07/28/10 07:54 PM, DWL wrote:
If this isn't the forum for asking install questions, by all means, stop reading
and tell me where to direct this question.
This is the place to ask about install questions.
I've downloaded and unpacked the .7z binaries for Solaris according to the
instruction
Hi list,
i have a questoin about the handling of (mathematical) functoins in sage.
i have a function
f : k^n \times (k^m)^n -> k for some Field k. with
f(q_1,\dots,q_n,x_1,\dots,x_n) -> \sum\limits_{i=1}^n q_i * x_i
for a given n,m.
and i want to create a family (f_i)_{i=1\dots l} of functions fro
Hi Nils!
On 28 Jul., 19:48, Nils Bruin wrote:
> Actually, differentiation of polynomials (just as a formal operation)
> has a lot of algebraic meaning,
Sure. But certainly you agree that there is a difference between the
non-zero polynomial x^2+x in GF(2)['x'] and the function
GF(2) --> GF(2)
I used Dan's minimal example. I copied his code into a file, ran it
in TexShop and got no errors, but did get a warning:
**
This is pdfTeX, Version 3.1415926-1.40.10 (TeX Live 2009)
\write18 e
If this isn't the forum for asking install questions, by all means, stop
reading
and tell me where to direct this question.
I've downloaded and unpacked the .7z binaries for Solaris according to the
instructions on this page:
http://wiki.sagemath.org/solaris-binaries
I've done everything thro
Hello,
On Wed, Jul 28, 2010 at 5:58 AM, maldun wrote:
> When will the 0.8 release of scipy come into sage, the new fft
> features would come quite in handy for me :)
My guess maybe in about a month. We need to upgrade to Numpy 1.4.1
first and resolve and potential problems with both numpy and s
That's great info. Thanks.
A
On Wed, Jul 28, 2010 at 5:58 PM, kcrisman wrote:
>
>
> On Jul 28, 11:51 am, Alec Battles wrote:
>> Sorry if there's some good reason why this would be redundant, but I
>> have an idea. It's a bit scary that you can't simply draw a triangle
>> with sage given a set
On Jul 28, 10:35 am, Simon King wrote:
> The point is that some people (including myself) believe that
> polynomials belong to algebra, whereas differentiation is calculus. A
> polynomial and a polynomial function are two very different things.
> So, how (and why) would one differentiate a polyno
Hi!
On Jul 28, 5:29 pm, eggartmumie wrote:
> I read the reference, I followed Your advice, all I get is a
> polynomial of type
> 'sage.rings.polynomial.polynomial_zz_pex.Polynomial_ZZ_pEX'
> which I connot coerce to the intended data type (I tried e.g.
And what data type do you want? In your ori
On Jul 28, 11:51 am, Alec Battles wrote:
> Sorry if there's some good reason why this would be redundant, but I
> have an idea. It's a bit scary that you can't simply draw a triangle
> with sage given a set of three coordinates...
>
You can do that very easily.
sage: polygon?
Returns e
Dear Simon,
On Jul 20, 11:53 pm, Simon King wrote:
> Hi!
>
> On 20 Jul., 22:58, eggartmumie wrote:
>
> > def goppapolynomial(F,z): # return a Goppa polynomial in z over ring
> > or field F
> > X = str(z); R. = PolynomialRing(F);
> > return R(X^(N-K));
>
> First of all, the notation R. =
I think that this kind of question is more dedicated to sage-support
because it does not deal about combinatorics
(http://groups.google.com/group/sage-support)
2010/7/28 Christian Stump :
> Salut cython specialists,
>
> I would like to implement a routine adding dictionaries with possibly
> differ
Hey,
I'm looking for a way to save a plot with a specific width and height in
pixels. My code basically looks like this:
E = EllipticCurve([a, b])
p = plot(E)
p.save('foo.png', ...)
I tried to change figsize and dpi in the save call but without any
success. Is there even a way to do that?
Thank
Sorry if there's some good reason why this would be redundant, but I
have an idea. It's a bit scary that you can't simply draw a triangle
with sage given a set of three coordinates...
Why doesn't sage make some sort of interface to KIG? It can be
scripted in python (using pykig.py), and draws geo
On Jul 28, 1:16 am, Santanu Sarkar
wrote:
> Let a, b,c be the length of three sides of a triangle.
> How can I draw the triangle using Sage?
Of course one issue is that there are infinitely many triangles with
these sides, when it comes to the coordinate plane. I guess, assuming
a>b>c (isocel
When will the 0.8 release of scipy come into sage, the new fft
features would come quite in handy for me :)
If it is not planed, whatever reasons there are for, is it possible to
update the current scipy version from 0.7 to 0.8 manually, I didn"t
find any resources for that...
greets
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On Jul 27, 5:54 pm, Robert Bradshaw
wrote:
> For anything that doesn't fit inside a single word, Sage uses the
> mpz functions in MPIR to do arithmetic. There are a variety of
> algorithms used--from the classical O(n^2) to various
> Karatsuba/Toom-Cook ones to Schönhage–Strassen for large value
I've tried to find info about this. Can't find anything... Any suggestions/help?
Alec
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On 28 Jul., 10:01, Simon King wrote:
> I think a solution would be to use gap.eval("Print(gens[1]);")
> instead. I'll try this, and create a trac ticket for it.
One more issue: The method creates quite common variable names (gens,
G, N) in the GAP interface. This can have very nasty side effects,
Hi Kenny,
On 28 Jul., 04:36, Kenny Brown wrote:
> ...
> sage: G.sylow_subgroup(3)
>
> File "", line 1
> [(1,344,246,148,50,393,295,197,99,),
> (2,345,247,149,51,394,296,198,100,),
> ...
> (22,365,267,169,71,414,316,218,120,),
>
Hello,
Thanks for your answers.
> > On 25 Jul., 10:52, drenwal wrote:
> >> But, I would prefer to use a more mathematical notation, like Y[k] or
> >> y...@k or whatever non already used symbol instead of Ac(y,k).
> > Talking about generators: There is a decorator that allows to define a
> > cust
I seem to have discovered an error with the wrapper to the GAP
function SylowSubgroup.
sage: n = 3^2 * 7^2
sage: G = CyclicPermutationGroup(n)
So far, so good. However,
sage: G.sylow_subgroup(3)
File "", line 1
[(1,344,246,148,
On Tue, 27 Jul 2010 at 02:45PM -0700, Katie Johnson wrote:
> Another brief question I have is: why does sagetex put files needed
> for a tex file (like graphics files) in my root directory (Macintosh
> HD)? It seems like a really odd place to have all of these files
> piling up, and what if I have
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