Thanks Volker. Now I have the following code. I need to take the
Python function callback which takes one argument and create a void
(*callback) (uint32_t) function pointer to pass to
self.thisptr.generatePrimes. How do I do this? Right now I get the
error "Cannot convert Python object to 'void
While writing a Cython wrapper for primesieve (http://code.google.com/
p/primesieve/) I have been unable to wrap the generatePrimes function
because of the function pointer argument.
I get "Cannot convert 'void' to Python object" on the last line
below. Please help me. I have been reading the Cyt
When I call
plot_step_function(v=[(1, 279238341033925),
(10001, 279238341033925), (10002,
279238341033925), (10003, 279238341033925),
(10004, 279238341033925), (10005,
279238341033925), (10006, 279238341033925)
.
I tried putting Python code in my Sage directory at
http://sage.math.washington.edu/home/kstueve/code/test.py but it seems
the Sage accounts aren't set up to run Python scripts. I am asking
for a Sage admin to set up an account on the Sage server where I can
put pi(x) tables and a Python scri
(with tables)
http://www.primefan.ru/stuff/primes/table.html
Writeup for my Summer 2009 project under William Stein
http://wstein.org/projects/stueve.pdf
A bibliography of resources I made during my Summer 2009 project
http://sage.math.washington.edu/home/kstueve/prime_pi_bibliography.html
Th
"How to contribute to Sage"
http://sagemath.org/development.html
As I understand it, all additions to Sage are made through the trac
server at http://trac.sagemath.org/sage_trac/. You need to obtain a
trac account. You do not contribute to Sage by providing new code-you
provide a patch through t
t sure how to get the equivalent of the html link tag to
work in the notebook.
I was able to get JSX graph to work in its own web page (http://
sage.math.washington.edu/home/kstueve/temp/blah.html), but got
"ReferenceError: JXG is not defined" in the notebook.
On Apr 22, 8:56 pm, k
Can someone give me an explanation of how to embed objects in cells.
For example, how does plot work? If I want to make a function that
embeds an image in a notebook cell, how would I do this? What I want
is to make Python code that communicates with a Java GUI in a notebook
cell. If you click t
Does anyone have information on the maximum size of an array of
doubles in C? I seem to be getting abnormal results using elements
past the first 1e6. What is the standard way to deal with very large
(millions to billions of elements) arrays of data in C?
Kevin Stueve
--
To post to this group,
I believe the speed of c is worthwhile here. And I am not skilled in
Cython.
On Mar 4, 12:12 am, Robert Bradshaw
wrote:
> On Mar 3, 2010, at 10:50 AM, kstueve wrote:
>
> > I've been working more on TOS's Li based pi(x) approximation code.
> > I've been trying to
The coercion question in the first post in this thread is still open.
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Problem solved. The list of zeros was mis-formatted (by myself).
Thanks Leif!
Here is the Pythonized version, for reference.
I made the table of zeros incorrectly. I used the code:
print "float zz[]={"
for i in range(1,6000):#len(zz)):
s=str(zz[i])+","
i+=1
s+=str(zz[i])+","
i
aking some sort of simple error in moving data
around. I have already asked one of my peers in my number theory
class, and we are both stuck.
Sage:
import subprocess
def fastli(x,y):
thesubprocess=subprocess.Popen(args=["/home/kstueve/Desktop/
riemannpi/li",str(x),str(y)],stdou
I am using the following function from Tomas Oliveira e Silva
(converted by myself into Python). See
http://trac.sagemath.org/sage_trac/ticket/8135
from math import log
#
# computation of li(x^{1/2+I t})+li(x^{1/2-I t})
#
# li(x^\rho) = x^\rho/u*(1+1/u+2!/u^2+3!/u^3+...),
# with \rho=1/2+it and
U.S. Scientists Given Access to Cloud Computing
New York Times, Feb. 4, 2010
The National Science Foundation and the Microsoft Corporation have
agreed to offer American scientific researchers free access to the
company's new cloud computing service.
Ed Lazowska, a University of Washington compu
Thomas R. Nicely's previously unpublished tables of prime counts and
prime reciprocal sums are now available at
http://sage.math.washington.edu/home/kstueve/T_R_NICELY/
These are the same data that Thomas R. Nicely has published at
http://www.trnicely.net/#PIX
but with more data p
Is it currently possible to make a notebook in a graphical mode where
you can see fractions, matrices, etc as you type?
For example:
You click on a "fraction" button
You see a horizontal line with two little boxes to click above and
below the line
You click the top box and type the numerator.
You c
It might be interesting to compare the difference between prime_pi and
its logarithmic integral approximation and the difference between
twin_prime_pi and its logarithmic integral approximation. How well
correlated are they?
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To post to this group, send an email to sage-devel@googlegroups.com
I just opened trac ticket #7613 (new task).
If anyone is looking for a project to do over winter break (or knows
anyone who would enjoy this project), they should read this. This is
a great opportunity to make a significant contribution to Sage and the
mathematics community in general. I would d
I have another question. I need a parser for the d attribute of the
path element of svg (scalable vector graphics). I want my physics
program to be able import shapes drawn with an svg designer such as
inkscape. Pyparsing seems to meet my needs. This is a third party
python library. If I use P
a applet a series of "snapshots" of
positions that are interpolated (likely better than linearly) by the
Java applet to create believable animation.
Kevin Stueve
On Nov 15, 3:42 pm, kstueve wrote:
> I need my program to have a graphical interface when run either
> locally or on a
On Nov 25, 12:34 pm, "Dr. David Kirkby"
wrote:
> It would appear to me that it would be very easy for a "script kiddie" to
> write
> a a program which created huge numbers of accounts on a Sage server, perform
> some CPU intensive computation on them, and bring the system to a near
> standstill
Innovation: The dizzying ambition of Wolfram Alpha
New Scientist Tech, Nov. 17, 2009
Stephen Wolfram wants Wolfram Alpha to generate knowledge of its own.
Alpha has been exposed to more utterances than a typical child would
hear in learning a new language, allowing it to get smarter at
understa
changing (and being calculated), such as the
position or velocity of a body.
http://ptolemy.berkeley.edu/java/ptplot5.7/ptolemy/plot/doc/index.htm
Kevin Stueve
On Nov 15, 10:03 pm, Pat LeSmithe wrote:
> On 11/15/2009 09:51 PM, kstueve wrote:
>
> > GeoGebra and Jmol are written in Jav
An alternative to adding/removing/commenting out/uncommenting print
statements through your code may be to use decorators. A decorator is
a a function that is passed your function whenever it is called. A
decorator can do whatever you want. Some of the possibilities are
caching values of the fu
Pat, thanks for the links and suggestions. They were helpful.
GeoGebra and Jmol are written in Java. Jmol and GeoGebra can use
JavaScript to simplify embedding in a web-page. Is this what you mean
by JS-"able"?
On Nov 15, 8:45 pm, Pat LeSmithe wrote:
> On 11/15/2009 06:08 PM,
e:
> On 11/15/2009 03:42 PM, kstueve wrote:
>
> > I would appreciate it if anyone has any links to JavaScript libraries
> > (or general suggestions on making a JavaScript GUI front-end that
> > communicates with a Python program) that might be helpful.
>
> There are so
I am aiming for (with quantitative output too).
Kevin Stueve
On Nov 13, 5:09 pm, kstueve wrote:
> To sage-dev
> Can someone please explain to me what traits are in the context of
> tvisual? The wiki page for it (http://www.enthought.com/traitsfrom
> the pagehttps://svn.enthought.c
On Nov 13, 7:44 pm, William Stein wrote:
> On Fri, Nov 13, 2009 at 5:09 PM, kstueve wrote:
>
> > To sage-dev
> > Can someone please explain to me what traits are in the context of
> > tvisual? The wiki page for it (http://www.enthought.com/traitsfrom
> > the
To sage-dev
Can someone please explain to me what traits are in the context of
tvisual? The wiki page for it (http://www.enthought.com/traits from
the page https://svn.enthought.com/enthought/wiki/TVTKIntroduction) is
a dead link.
A google search of either vpython.org or svn.enthought.com produce
ns in 6-10
> variables. If I were you, I'd look through Hibbeler's texts for
> "typical" problems that it should be easy to input and solve. In
> fact, you can borrow my copy some time, if you like.
>
>
>
> On Tue, Sep 22, 2009 at 11:14 AM, kstueve wrote:
>
>
n y component of linear
velocity of point B = mu * change in x component of linear velocity of
point B
Are these equations correct?"
I then replied to my own thread with "After reading more of the site,
I realize that equation 1 must refer to the converging and diverging
velocities of points
Have any of you heard of Erik Neumann? He published some excellent
Java physics demos at http://www.myphysicslab.com/ He is in Seatle,
and has attended UW.
I have been looking into vector graphics with javascript. It appears
that circles, lines, and other curves are made out of lots of div
ele
I added a zip file with the code to my sagemath directory and a note
to the trac server. Thanks for your comments Georg and Robert
Bradshaw! I think I'll need some help making the build scripts for
every possible operating system and platform. Thanks for being
patient with this being my first S
Would any of you be interested in refereeing ticket 7013? It needs
review.
On Sep 25, 6:26 pm, kstueve wrote:
> Uses a hybrid table lookup and sieving algorithm. Also provides the
> option of using PARI's sieving algorithm, Andrew Ohana's optimized
> Legendre algorithm,
I opened ticket #7017.
Kevin Stueve
On Sep 25, 7:05 pm, Minh Nguyen wrote:
> Hi,
>
> On Sat, Sep 26, 2009 at 11:28 AM, kstueve wrote:
>
>
>
> > from sage.rings.fast_arith import prime_range
> > print prime_range(10^16,10^16+100)
>
> Those two lines gave me
I am having trouble with the following lines. Should I make a new
trac ticket for this or am I just doing something wrong? I am on a
MacBook pro.
from sage.rings.fast_arith import prime_range
print prime_range(10^16,10^16+100)
Traceback (most recent call last):
File "", line 1, in
File "/Us
Uses a hybrid table lookup and sieving algorithm. Also provides the
option of using PARI's sieving algorithm, Andrew Ohana's optimized
Legendre algorithm, or Victor Miller's Lagarias Miller Odlyzko (LMO)
combinatorial algorithm.
Be sure to use the -m32 option when compiling the c code, and if
ne
As my work on prime_pi and nth_prime is drawing to a close, William
Stein and I have discussed the possibility of me making a graphical
physics program to be included in Sage, the free open source math
program.
An example of the desired functionality is to either with a few lines
of code from wit
Some things I would love to see in Sage:
1) Real-time sound manipulation e.g. hearing a sound change as you
manipulate a frequency distribution
2) Functionality similar to ODE architect e.g. drawing an animated
spring system and analyzing its DEs and graphs
3) Design by contract and proofs of c
On Jul 27, 3:11 am, David Kirkby wrote:
> 2009/7/27 Peter Jeremy :
>
>
>
> > On 2009-Jul-26 11:07:49 -0700, William Stein wrote:
> >>Hi Sage-Devel (in particular, people who know about electrical circuits),
>
> > I'm not an EE but electronics is a hobby of mine.
>
> >>I just happen to be meeti
Hello,
http://www.circuitengine.com is my site. It uses Gaussian elimination
and a fifth order adaptive step-size Runga-Kutta solver to simulate
electric circuits that are drawn by the user. I created a login for
the sage development team to use. Please feel free to experiment with
my program.
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