[sage-devel] Re: #1485: [with bundle, with negative review] wrapper for invariant_ring and invariant_algebra_reynolds in Singular

Hi Michael, since i was partially involved in that patch, i'd like to know what happened. On Jan 17, 4:32 am, mabshoff <[EMAIL PROTECTED] dortmund.de> wrote: > I am as surprised as you are that this patch causes problems. What > happens is that when doctesting plot/plot3d/transform.pyx it just >

[sage-devel] Re: #1485: [with bundle, with negative review] wrapper for invariant_ring and invariant_algebra_reynolds in Singular

transform.pyx does some maxima stuff, perhaps the patch (or some combination with other patches) is leaving maxima in an unstable state? - Robert On Jan 17, 2008, at 1:46 AM, Simon King wrote: > Hi Michael, > > since i was partially involved in that patch, i'd like to know what > happened. >

[sage-devel] Re: Fwd: typo in tutorial

Let me be more precise. There are no instances of axes-->ases in http://sage.math.washington.edu/home/wdj/patches/tut.tex on which the patch http://sage.math.washington.edu/home/wdj/patches/tut20071227.hg is based on. I think this patch was applied in 2.10.alpha0 and this was the latest patch post

[sage-devel] Re: Fwd: typo in tutorial

I already corrected this in a patch I sent in a few weeks ago now. On Jan 17, 2008 1:39 AM, William Stein <[EMAIL PROTECTED]> wrote: > > -- Forwarded message -- > From: Matthew Moelter <[EMAIL PROTECTED]> > Date: Wed, 16 Jan 2008 22:16:00 -0800 > Subject: typo in tutorial > To: [

[sage-devel] Re: Making a mayavi2.spkg (SAGE package)

legout wrote: > Hi Jaap, > > thanks for you fast reply, but i still can not build mayavi. I think > its because enthought.tvtk couldn't be downloaded. > In this spkg nothing should be downloaded. I is all inclusive :) It seems you are getting the wrong easy_install. Get this one: http://sage.

[sage-devel] Re: [SAGE] #1485: [with bundle, with negative review] wrapper for invariant_ring and invariant_algebra_reynolds in Singular

Just a crazy Iidea I thought of on waking up this morning: I made that patch on the same machine that the plot3d problems occur on (old 64bit with 64bit fiesty fawn ubuntu). Maybe the new plot3d files are not built correctly and this somehow also made it into the patch? On Jan 16, 2008 10:32 PM,

[sage-devel] Re: [SAGE] #1485: [with bundle, with negative review] wrapper for invariant_ring and invariant_algebra_reynolds in Singular

On Jan 17, 1:02 pm, "David Joyner" <[EMAIL PROTECTED]> wrote: Hi David, > Just a crazy Iidea I thought of on waking up this morning: I made that patch > on > the same machine that the plot3d problems occur on (old 64bit with > 64bit fiesty fawn > ubuntu). Maybe the new plot3d files are not bu

[sage-devel] Re: Fwd: typo in tutorial

On Jan 17, 1:20 pm, "David Joyner" <[EMAIL PROTECTED]> wrote: Hi David, > Let me be more precise. There are no instances of axes-->ases > inhttp://sage.math.washington.edu/home/wdj/patches/tut.tex > on which the > patchhttp://sage.math.washington.edu/home/wdj/patches/tut20071227.hg > is base

[sage-devel] Re: #1485: [with bundle, with negative review] wrapper for invariant_ring and invariant_algebra_reynolds in Singular

Dear Michael, On Jan 17, 2:15 pm, mabshoff <[EMAIL PROTECTED] dortmund.de> wrote: > > > Perhaps this is related to something that i met a while ago. I had > > > some computation involving occasionally some logarithms. When i > > > repeated the *same* computation very often, the computation time

[sage-devel] Re: Multiple return values

Hi, Agreed that Magma > I'll just come out and say it -- It's a _terrible_ design in Magma. +1. > Yet another example of the Magma semantics being a pain. > They don't even use a notion of None. Argh. +1 ; Although there is a syntax to denote no argument (return x, _;) The problem is that in

[sage-devel] Re: #1485: [with bundle, with negative review] wrapper for invariant_ring and invariant_algebra_reynolds in Singular

On Jan 17, 11:39 am, Robert Bradshaw <[EMAIL PROTECTED]> wrote: Hello, > transform.pyx does some maxima stuff, perhaps the patch (or some > combination with other patches) is leaving maxima in an unstable state? I consider this the most likely culprit, but I am not familiar with the maxima in

[sage-devel] Re: infinity

The reason I put it in is that if you have signed infinities then you might as well preserve the sign when you invert them, which means that you should have a divider. Yes, that means you sometimes get elements where you don't know if it's positive or negative. I think that's okay, but then I'm t

[sage-devel] Re: Multiple return values

On Jan 17, 2008, at 6:33 AM, David Kohel wrote: >> E1.is_isomorphic(E2) >> >> always returns one boolean. > > +1 I agree too. > >> If you want the map too, you have write >> something explicit, e.g., >> >>t, phi = E1.is_isomorphic(E2, with_map=True) >> >> where phi will be None they aren't

[sage-devel] infinity

Hi folks (especially william + robert + david roe), I showed up for Doc Days 1 and started looking at the infinity and extended integer ring stuff. Question: why does the "unsigned infinity ring" not have a zero element, whereas the "(signed) infinity ring" has a zero? This is okay: sage:

[sage-devel] Approximating Ei using polynomials

The A&S handbook lists polynomial coefficients for approximation of E1, the exponential integral. Does anyone know how these coefficients were derived? Is it a chebyshev polynomial? I want to dynamically compute these coefficients to the required precision. Tim --~--~-~--~~--

[sage-devel] Re: Making a mayavi2.spkg (SAGE package)

Great :) Now everything builds fine. Thanks. On Jan 17, 1:17 pm, Jaap Spies <[EMAIL PROTECTED]> wrote: > legout wrote: > > Hi Jaap, > > > thanks for you fast reply, but i still can not build mayavi. I think > > its because enthought.tvtk couldn't be downloaded. > > In this spkg nothing should be

[sage-devel] Axiom and the Numerical Mathematics Consortium

I have been concentrating on Axiom's numerical capabilities. I am making a set of regression tests against the published values in Abramowitz and Stegun (1965). You might find it interesting to run these same tests in Sage. I can send them to anyone who would like to volunteer. They are basicall

[sage-devel] Re: Multiple return values

On Jan 17, 2008 9:33 AM, David Kohel <[EMAIL PROTECTED]> wrote: > X = Iso(E1,E2) # does nothing > X.cardinality() # tests is_isomorphic and j-invariant = 0 or 12^3 > X.representative() # computes an isomorphism > X.list() # computes all isomorphisms > > The advantage of creating X is that it can c

[sage-devel] Re: Multiple return values

On 17-Jan-08, at 10:19 AM, Soroosh Yazdani wrote: > On Jan 17, 2008 9:33 AM, David Kohel <[EMAIL PROTECTED]> wrote: > X = Iso(E1,E2) # does nothing > X.cardinality() # tests is_isomorphic and j-invariant = 0 or 12^3 > X.representative() # computes an isomorphism > X.list() # computes all isomorp

[sage-devel] Re: Multiple return values

On Jan 17, 6:33 am, David Kohel <[EMAIL PROTECTED]> wrote: > This is my question: do we have functions which can return > different types depending on the arguments passed in? > Whatever its design flaws, it has been the philosophy that > this should not be the case in Magma. The alternative is >

[sage-devel] Re: Making a mayavi2.spkg (SAGE package)

legout wrote: > Great :) Now everything builds fine. Thanks. > > On Jan 17, 1:17 pm, Jaap Spies <[EMAIL PROTECTED]> wrote: >> legout wrote: >>> Hi Jaap, >>> thanks for you fast reply, but i still can not build mayavi. I think >>> its because enthought.tvtk couldn't be downloaded. >> In this spkg

[sage-devel] Two Computational Mathematics Job Openings

City College of New York (my prior place of employment) and the Center for Algorithms and Interactive Scientific Software (CAISS) has two tenure track job openings. Headed by Gilbert Baumslag, the designer of Magnus , this is a group dedicated to computati

[sage-devel] Re: Approximating Ei using polynomials

I don't know the answer to this for certain, but (assuming you mean eq. 5.1.53 on page 231 - http://www.math.sfu.ca/~cbm/aands/page_231.htm ) it looks to me like this might just a 5th degree polynomial interpolation (in which case, it's of course not something that you can compute to arbitrary pre

[sage-devel] Re: Multiple return values

I will try to take all the above on board as I am implementing it, and look forward to having you people make constructive criticisms But David K's suggestion about the set of all iso/automorphisms might wait until the next round. I hope that people other than elliptic curve afficionados have

[sage-devel] German Sage Introduction

Hi, if you speak German try this: http://www.google.de/search?hl=de&q=sage+math i.e. if you search for "sage math" via Google in Germany the very first entry is the "SAGE-intro-German" on the Sage wiki: http://wiki.sagemath.org/SAGE-intro-German This intro is * totally outdated and

[sage-devel] Re: [fricas-devel] sage package

Martin, You are right. The version of axiom4sage (fricas4sage) is a bit old and based on only the first experimental release of the Lisp caching scheme implemented by Waldek. It is time to update it. But do you think maybe we should wait until Waldek declares the next official release of FriCAS o

[sage-devel] Re: sage package

On Jan 17, 11:57 pm, "Bill Page" <[EMAIL PROTECTED]> wrote: > On 1/17/08, mabshoff <[EMAIL PROTECTED]> wrote: > > > > [I am not CCing the FriCAS google group since I am not subscribed] > > > On Jan 17, 10:44 pm, "Bill Page" <[EMAIL PROTECTED]> wrote: > > ... > > > > In principle doing a new fric

[sage-devel] Re: sage package

[I am not CCing the FriCAS google group since I am not subscribed] On Jan 17, 10:44 pm, "Bill Page" <[EMAIL PROTECTED]> wrote: > Martin, Hi, > You are right. The version of axiom4sage (fricas4sage) is a bit old > and based on only the first experimental release of the Lisp caching > scheme impl

[sage-devel] Re: sage package

On 1/17/08, mabshoff <[EMAIL PROTECTED]> wrote: > > [I am not CCing the FriCAS google group since I am not subscribed] > > On Jan 17, 10:44 pm, "Bill Page" <[EMAIL PROTECTED]> wrote: > ... > > > > In principle doing a new fricas4sage release is fairly easy. First you > > need to generate a cached

[sage-devel] Random surface in 3d using jmol

I've been working on a list plot that interpolates a surface from a list of 3-tuples. Here is an example where the points were randomly chosen (by sampling from a normally distributed random variable in x,y,z coordinates) and interpolated into a surface. http://sage.math.washington.edu/home/jk

[sage-devel] Re: Random surface in 3d using jmol

Wow, that's frikkin' awesome! If you change the color to something prettier, William will want to lick it! ;) On Thu, 17 Jan 2008, Joshua Kantor wrote: > > I've been working on a list plot that interpolates a surface from a > list of 3-tuples. > > Here is an example where the points were ra

[sage-devel] Re: Random surface in 3d using jmol

On Jan 17, 2008 7:12 PM, <[EMAIL PROTECTED]> wrote: > > Wow, that's frikkin' awesome! If you change the color to something prettier, > William will want to lick it! ;) > > Hey, that's what I was about to say. Anyway, please post code, so I can try it out, change the color, and ... William

[sage-devel] Re: Installer Package for OS X 10.4

On Jan 15, 2008 9:31 PM, jdmitchell <[EMAIL PROTECTED]> wrote: > > Hello, > > This is my first post to the developer group so please bear with me. > Also, I don't mean to distract you from any pressing matters so take > your time. Hi, I just want to remark quickly that I am very appreciative for

[sage-devel] Re: Random surface in 3d using jmol

> Here is an example where the points were randomly chosen (by sampling > from a normally distributed random variable in x,y,z coordinates) and > interpolated into a surface. > > > http://sage.math.washington.edu/home/jkantor/picture_1.png > > and with opacity > > http://sage.math.washi

[sage-devel] Re: First Sage Screencast

On Jan 16, 9:00 pm, Benjamin <[EMAIL PROTECTED]> wrote: > On Jan 6, 11:11 pm, "William Stein" <[EMAIL PROTECTED]> wrote: > > > On Jan 6, 2008 11:07 AM, Ted Kosan <[EMAIL PROTECTED]> wrote: > > > > Timothy wrote: > > > > > GHOP (Google Highly Open Participation Contest) contestant Benjamin > > >

[sage-devel] Re: Random surface in 3d using jmol

I'm not sure if its what you are asking, but I think it would be very cool if sage could export 3d objects to whatever industry-standard file formats exist for 3d printing. -M.Hampton On Jan 17, 9:38 pm, "Ted Kosan" <[EMAIL PROTECTED]> wrote: > > Here is an example where the points were random

[sage-devel] Re: First Sage Screencast

On Jan 17, 2008 7:43 PM, Benjamin <[EMAIL PROTECTED]> wrote: > > > > On Jan 16, 9:00 pm, Benjamin <[EMAIL PROTECTED]> wrote: > > On Jan 6, 11:11 pm, "William Stein" <[EMAIL PROTECTED]> wrote: > > > > > On Jan 6, 2008 11:07 AM, Ted Kosan <[EMAIL PROTECTED]> wrote: > > > > > > Timothy wrote: > > > >

[sage-devel] Re: First Sage Screencast

On Jan 17, 2008 11:50 PM, William Stein <[EMAIL PROTECTED]> wrote: > http://sagemath.org/screen_shots Maybe a link to some of the google videos of Sage can be added here. http://video.google.com/videosearch?q=sage+math&sitesearch= Regards, Alfredo --~--~-~--~~~---

[sage-devel] Re: First Sage Screencast

On Jan 17, 2008 9:05 PM, Alfredo Portes <[EMAIL PROTECTED]> wrote: > > On Jan 17, 2008 11:50 PM, William Stein <[EMAIL PROTECTED]> wrote: > > > http://sagemath.org/screen_shots > > Maybe a link to some of the google videos of Sage > can be added here. > > http://video.google.com/videosearch?q=sage

[sage-devel] Re: Random surface in 3d using jmol

mhampton wrote: > I'm not sure if its what you are asking, but I think it would be very > cool if sage could export 3d objects to whatever industry-standard > file formats exist for 3d printing. The reprap takes STL files: http://en.wikipedia.org/wiki/STL_(file_format) But what I was wondering

[sage-devel] Re: Installer Package for OS X 10.4

William Stein wrote: > On Jan 15, 2008 9:31 PM, jdmitchell <[EMAIL PROTECTED]> wrote: > >> Hello, >> >> This is my first post to the developer group so please bear with me. >> Also, I don't mean to distract you from any pressing matters so take >> your time. >> > > Hi, > > I just want to