[sage-devel] Re: Fwd: Gröbner Basis computation over ZZ

2007-02-08 Thread David Joyner
If the question is "are there applications of Grobner bases over ZZ?" then the answer I believe is yes. George Nakos, a colleague 2 doors down the hall who implemented one of the first Grobner basis computaitons over ZZ (for Mma, years and years ago) for the purpose of doing homotopy computations

[sage-devel] Re: more p-adic heights code

2007-02-10 Thread David Harvey
On Feb 9, 2007, at 11:28 PM, William Stein wrote: > > On Fri, 09 Feb 2007 16:18:16 -0700, David Harvey > <[EMAIL PROTECTED]> wrote: > >> BTW that ell_rational_field.py is getting kind of ridiculously big. > > Indeed! It desparately needs to be broken up. I t

[sage-devel] Re: design question: interval arithmetic comparisons

2007-02-10 Thread David Harvey
relation, which seems to be the main ingredient missing in the real interval case. Do you have any other examples of undesirable behaviour apart from the business with the leading term of a polynomial? My feeling is that it's the code in the polynomials that needs to ch

[sage-devel] Re: design question: interval arithmetic comparisons

2007-02-10 Thread David Harvey
ave some idea of the error in your input data then the system automatically gives you proven error bounds in the output. Is that the basic idea? I take it the whole real interval thing is not just some academic curiosity. David --~--~-~--~~~---~--~~ To post

[sage-devel] Re: design question: interval arithmetic comparisons

2007-02-11 Thread David Harvey
ementation of RealInterval, pAdicField, etc. I'm not sure exactly why the python people impose this rule. I guess if you are looking up a key in a hashtable, you hash the key, look in the appropriate bucket, loop over all items in the bucket. Things are going to be pretty weird if the

[sage-devel] Re: design question: interval arithmetic comparisons

2007-02-12 Thread David Roe
azy p-adics and power series, you should let me know so I can take your application into account in the design. David On Feb 12, 2:38 am, "Michel" <[EMAIL PROTECTED]> wrote: > I am wondering what Sage's strategy is with regard to coercions. > It thought that i

[sage-devel] speeding up object construction

2007-02-13 Thread David Harvey
t once, if that proves to be taking up time. Similarly we would need a destructor. I'm sure it's not quite as simple as what I've put in the above list, but let's just see what we can do. I would like it to be as close as possible to the int

[sage-devel] Re: importante

2007-02-16 Thread David Joyner
On the perhaps premature thought that this is spam, I banned him from posting again. If someone knows him or can vouch it isn't spam, please email me offlist. Thanks. Timothy Clemans wrote: > Thanks to Google I have some idea of what ramoncito said. > "Good, the following thing is for asking that

[sage-devel] Re: ianal but...

2007-02-18 Thread David Joyner
On 2/18/07, William Stein <[EMAIL PROTECTED]> wrote: > Hello, > > Certain kind researchers at Microsoft Rsearch have code they would like to > contribute to SAGE. They are only allowed release it under the Microsoft > Permissive License, which is described here (and linked to): > > > http://www.m

[sage-devel] Re: need some beta-testers for a sage gmp patch

2007-02-19 Thread David Joyner
I did this and had no problem compiling on a amd64 suse10.0 machine. +++ On 2/18/07, Jason Martin <[EMAIL PROTECTED]> wrote: > > Hi All, > > I've been tweaking the gmp used in sage. Right now this will only > benefit Linux users who have a core2 processor. Howev

[sage-devel] slices

2007-02-21 Thread David Roe
slice operator for p-adic fields and this is stymieing me (yes, that is how you spell stymieing: I just looked it up). David --~--~-~--~~~---~--~~ To post to this group, send email to sage-devel@googlegroups.com To unsubscribe from this group, send email to [EMAIL

[sage-devel] Re: Contributing to SAGE with coding theory developments.

2007-02-22 Thread David Joyner
ete description of the genus 0 AG codes. I'm not sure if SAGE's divisor classes even work in genus 0 so this may not be completed for quite awhile. If any of this sounds interesting, please let me know. - David +++ On 2/21/07, Pere Urbón

[sage-devel] Re: Contributing to SAGE with coding theory developments.

2007-02-22 Thread David Joyner
Pere Urbón Bayes wrote: > El dj 22 de 02 del 2007 a les 08:15 -0500, en/na David Joyner va > escriure: > >> Hi Pere, good to hear from you again. >> >> 1. Nick Alexander's suggestions (e.g., coding theory over rings) are good >> ones. >> >>

[sage-devel] Re: Contributing to SAGE with coding theory developments.

2007-02-25 Thread David Joyner
On 2/25/07, Pere Urbón Bayes <[EMAIL PROTECTED]> wrote: > > > If you read that program and then write something else, it is by > > definition > > a derivative work. What is the license of Leon's program? if it isn't > > open source, > > then reading it and writing something based on it is a poten

[sage-devel] Re: Multivariate polynomial benchmark

2007-02-28 Thread David Harvey
actually set in advance how many iterations to perform; we let the software decide that based on how long each iteration is taking. David --~--~-~--~~~---~--~~ To post to this group, send email to sage-devel@googlegroups.com To unsubscribe from this group, send

[sage-devel] Re: Multivariate polynomial benchmark

2007-02-28 Thread David Harvey
re are some useful ideas in there for you. It includes a stripped-down implementation of SAGE's "point" class so that you can draw graphs with many points much (!) more quickly than SAGE can. Probably could be made faster with the gd library but that's for another day. David --~-

[sage-devel] Re: proposed real_mpfr patches

2007-02-28 Thread David Harvey
several >> fields to make a serious proposal). Also, even in scientific notation >> it would display the fixed number of digits, right? > > I second doing something more efficient. Can I add to that: for very high precision, even just the binary =

[sage-devel] Re: sage calculus

2007-03-01 Thread David Joyner
On 3/1/07, Joel B. Mohler <[EMAIL PROTECTED]> wrote: > > I'm wondering if we could have an update on the basic calculus rewrite which > was discussed a while ago on the mailing list? > > I'm giving a talk on SAGE in a week and I might want to have a basic calculus > demo if it's ready to show. > >

[sage-devel] Re: unsubscribe

2007-03-02 Thread David Joyner
Done. On 02 Mar 2007 08:41:48 +0100, Martin Rubey <[EMAIL PROTECTED]> wrote: > > Dear maintainers, > > please unsubscribe me from the list. Something went wrong with my google > account and I cannot access my subscription anymore. (I only used it for sage) > > Many thanks > > Martin > > > > > -

[sage-devel] Re: sage calculus

2007-03-02 Thread David Joyner
Keep up the great work you're doing. If I get enough time, I may email you again over spring break to ask you some questions about how to improve the tutorial based on your new stuff. On 3/2/07, Bobby Moretti <[EMAIL PROTECTED]> wrote: > Hey Joel, > > > > > > I'm wondering if we could have an upd

[sage-devel] Random elements

2007-03-02 Thread David Roe
check the docstring for the function. Of course, this still leaves the question of which is the default... Anyway, I'm planning on doing this for p-adics. Thought I might throw the idea in for integers too. David >It's always bugged me that the default distribution for integers (an

[sage-devel] Re: China Facing the Mighty Working Pressure

2007-03-06 Thread David Joyner
Timothy Clemans wrote: > Is there a way to block some of this spam? If there is, please let me know. These people register and post almost immediately. I ban them as soon as I can and delete their post from the archives. It appears to me that if we allow anyone to sign up to this list then this

[sage-devel] Re: First remarks on new padics model

2007-03-07 Thread David Kohel
Hi, Another feature that I find extremely useful are the quotient rings (currently not implemented). This allows one to work in a well-defined ring, and control precision precisely. --David --~--~-~--~~~---~--~~ To post to this group, send email to sage-devel

[sage-devel] Re: First remarks on new padics model

2007-03-07 Thread David Roe
I tried sending a response a while ago, but it didn't seem to get through. I'm including a response to David Kohel's e-mail at the bottom of this. > Congratulations on the new p-adic model. This really looks very > promising and extensible. Thanks. > - It shou

[sage-devel] Re: First remarks on new padics model

2007-03-08 Thread David Roe
le-version.hg will have a version that passes all doctests. That means I'm sending it off to William, but if you want it faster you can get it from there. And sage.math.washington.edu/home/padicgroup/development-version.hg has the most recent version. I'll only update that when the

[sage-devel] Re: Strange inconsistency

2007-03-12 Thread David Harvey
sage and quite > confusing. E.g. > consider > > [i for i in GF(5)] That's definitely a bug. I'll report it to trac, and also to whom I suspect is the author of that code, who is sitting right next to me :-) david --~--~-~--~~~---~--~

[sage-devel] Re: Strange inconsistency

2007-03-14 Thread David Harvey
://sage.math.washington.edu/home/dmharvey/patches/intmod_iter.hg david On Wed, 14 Mar 2007, Michel wrote: > > The bug seems to be at line 458 of integer_mod_ring.py. I assume that > the line > > yield i > > should be replaced by > > yield integer_mod.IntegerMod(self, i) > &

[sage-devel] Re: sage-2.4 plan

2007-03-16 Thread David Joyner
Moretti - Calculus > * William Stein - Modular forms > * William Stein - Modular abelian varieties > * David Roed - Updated p-adics > * William Stein - add p-adic docs to the reference manual > * David Harvey - bug fixes > * Clement Pernet - new linbox charpoly > * Martin Albr

[sage-devel] Re: NTL SageX thoughts and questions

2007-03-16 Thread David Harvey
yer is a .pxi file and maybe a few C++ helper functions to make > utilizing NTL > from other SageX classes super-simple. At the moment, the naming > schemes > between my .pxi stuff and the NTL names are a bit of mish-mash. I > enlarge on > these comments in what foll

[sage-devel] Re: NTL SageX thoughts and questions

2007-03-16 Thread David Harvey
; math software. The > ntl.pyx file provides NTL with almost the same *semantics* as NTL. > For this, the objects in ntl.pyx must stay mutable (since they are in > ntl), and the file itself obviously should continue to exist. That > said, as David H suggests objects like > polynomials

[sage-devel] Re: NTL SageX thoughts and questions

2007-03-16 Thread David Harvey
ent *elements* of the number field, you need denominators. Probably best to represent elements using a polynomial in Z[x], with a single denominator, which is I think what you've been suggesting. David --~--~-~--~~~---~--~~ To post to this group, send

[sage-devel] [Fwd: Re: [SciPy-user] from maple to scipy/numpy]

2007-03-19 Thread David Joyner
Hello all: Has anyone here heard of pydx? - David Joyner --~--~-~--~~~---~--~~ To post to this group, send email to sage-devel@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http

[sage-devel] SAGE on the BBC

2007-03-19 Thread David Harvey
ians four years. The final computation took more than three days' solid processing time on a Sage supercomputer." david --~--~-~--~~~---~--~~ To post to this group, send email to sage-devel@googlegroups.com To unsubscribe from this group, send email to [

[sage-devel] Re: Group Algebras in GAP/SAGE

2007-03-19 Thread David Harvey
On Mar 19, 2007, at 9:58 AM, Mike Hansen wrote: > I guess this is mostly directed toward David Joyner, but if anyone > else knows, feel free to chime in. I've been trying to figure out the > best way to do calculations in a group ring or group algebra. I've > checked a

[sage-devel] Re: Group Algebras in GAP/SAGE

2007-03-19 Thread David Joyner
On 3/19/07, Mike Hansen <[EMAIL PROTECTED]> wrote: > > I guess this is mostly directed toward David Joyner, but if anyone > else knows, feel free to chime in. I've been trying to figure out the > best way to do calculations in a group ring or group algebra. I'

[sage-devel] Re: Group Algebras in GAP/SAGE

2007-03-19 Thread David Kohel
number/function rings would give insight into both the modular theory (i.e. over finite fields) and characteristic zero, so the computational infrastructure should be set up generically. --David --~--~-~--~~~---~--~~ To post to this group, send email to sage-devel

[sage-devel] Re: Conway's nimber field

2007-03-19 Thread David Joyner
Are you using ONAG for the main reference? In any case, I would appreciate a precise reference to a book or article on nimbers. On 3/19/07, Michel <[EMAIL PROTECTED]> wrote: > > Hi, > > To acquant myself with sage's inner workings I have implemented > Conway's nimber field. > See > > http://alpha

[sage-devel] Re: Group Algebras in GAP/SAGE

2007-03-19 Thread David Joyner
On 3/19/07, Mike Hansen <[EMAIL PROTECTED]> wrote: > > > Did you look at LAGUNA or UnitLib? > > Yeah, I looked at LAGUNA, and it wasn't exactly what I was looking > for. I guess I'm more interested in the looking at the group algebras > as K[G]-modules. If I understand correctly, the following i

[sage-devel] Re: Inconsistency in root finding

2007-03-20 Thread David Harvey
ements of finite fields, extensions > of finite fields, padic extensions, etc. Same with lattices of number > fields over QQ and ZZ, and embeddings into CC. Oh boy I really really don't like where this is going. Insisting on "a == b&

[sage-devel] Re: Inconsistency in root finding

2007-03-20 Thread David Harvey
GE equality", and implement SAGE equality as a new method attached to each object. Then we could follow python rules for "==" and our rules for everything else, and all SAGE code would become completely unreadable (and for that matter unwr

[sage-devel] Re: Inconsistency in root finding

2007-03-20 Thread David Harvey
can have two elements of the same ring with different precision and hence presumably different hashes, which still compare equal). Second, I can't even see technically how you would do that without modifying python in some horrible way. David --~--~-~--~~~--

[sage-devel] Re: polynomial quo_rem coercion

2007-03-22 Thread David Harvey
ut parents being > mis-matched -- I think this is a bug in itself. > > Any comments? Exactly which quo_rem() method are you talking about? Which class? David --~--~-~--~~~---~--~~ To post to this group, send email to sage-devel@googlegroups.com To unsubscrib

[sage-devel] Re: Science calls Sage a "supercomputer"

2007-03-23 Thread David Harvey
of a wikipedia page. It used to say: "The final calculation was carried out using William Stein's SAGE system at University of Washington." The correction was made by yours truly, less than 24 hours ago. David --~--~-~--~~~---~--~~ To post

[sage-devel] Re: open source "nauty"

2007-03-23 Thread David Joyner
Let me be the first on this list to congratulate you! IMHO, this is a big contribution.. Can you give some timings, comparing your package vs nauty? I'm not sure how to browse a patch and even if I did, I'm not sure I'd understand your code. How much is Sagex and how much is Python? +++

[sage-devel] Re: sage.math.washington.edu back online

2007-03-23 Thread David Joyner
On 3/23/07, William Stein <[EMAIL PROTECTED]> wrote: > > Hi, > > sage.math.washington.edu is back. If you have an account there, you > should be able to log in with ssh. > > 1. The operating system is amd64 Debian. This is a completely fresh install, > so it's likely some packages you might need

[sage-devel] Re: sage.math.washington.edu back online

2007-03-23 Thread David Harvey
e this I haven't > copied /usr/local over yet.) svn please. David --~--~-~--~~~---~--~~ To post to this group, send email to sage-devel@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group

[sage-devel] Re: Discrete log problem

2007-03-24 Thread David Kohel
NOT usually called by a one-line call to factorization or discrete log. Generally the algorithm is (only?) suitable for distributed computation. A good QFS (after Pollard rho [and ECM for factorization problems]) should suffice for any stand-alone system. --David

[sage-devel] Re: sage-2.4-rc3

2007-03-25 Thread David Joyner
All tests passed on suse 10.2 amd 64 bit. Jaap Spies wrote: > Jaap Spies wrote: > >> There were no problems what so ever with sage-2.4.rc3 on FC5: >> -- >> All tests passed! >> Total time for all tests: 1093.9 seconds >> [EMAIL

[sage-devel] Re: sage-2.4-rc3

2007-03-25 Thread David Roe
Build (for rc3) went fine on my machine (32 bit MacBook Pro, OS X 10.4.9) real61m23.087s user38m43.449s sys 15m50.664s Make test: All tests passed! Total time for all tests: 1732.5 seconds David On Mar 25, 5:52 pm, "William Stein" <[EMAIL PROTECTED]> wrote: > Ca

[sage-devel] Re: Discrete log problem

2007-03-25 Thread David Kohel
> To David Kohel: index calculus for discrete logs uses linear algebra mod p-1 > (not 2). Yes, I overstated the similarities between factorization and dlogs. --David --~--~-~--~~~---~--~~ To post to this group, send email to sage-devel@googlegroups.

[sage-devel] Re: integer-shiting + mpfr reals

2007-03-26 Thread David Roe
plies by 2^n (before 2.4 I think it had to be a positive integer). If you want to be able to shift by arbitrary real values then change the code for __lshift__ and __rshift__ for the reals. David On Mar 25, 11:24 pm, "didier deshommes" <[EMAIL PROTECTED]> wrote: > This is stra

[sage-devel] Re: integer-shiting + mpfr reals

2007-03-26 Thread David Harvey
On Mar 26, 2007, at 6:57 PM, didier deshommes wrote: > > On 3/26/07, David Roe <[EMAIL PROTECTED]> wrote: >> >> Two things. First, order of operations is not what I would expect: >> your first code is equivalent to >> sage: 1 << (3 + 1.2). > > Ye

[sage-devel] Re: integer-shiting + mpfr reals

2007-03-26 Thread David Harvey
vely forever. I don't know enough about what that function is supposed to do to fix the bug. My gut feeling is that Integer.__lshift__ shouldn't be using the coercion module; or at least, the semantics for coercion for the shift operator need to be clarified. David --~--~-~

[sage-devel] Re: number field arithmetic

2007-03-27 Thread David Harvey
SageX art > for making these things fast? Does someone have a trick up their > sleeve to get > these basic arithmetic operations a bit faster from the python shell? At the moment there are so many different reasons that the code could be slow, I don't think you've at all

[sage-devel] Re: Sage rep. at ECCAD?

2007-03-27 Thread David Joyner
I see Didier Deshommes has registered. I just did as well, but don't know (if or) when I'll how up (it depends on other variables). On 3/27/07, Jason Martin <[EMAIL PROTECTED]> wrote: > > Hi All, > > Are any Sage evangelists planning to attend the East Coast Computer Algebra > Day? > > http://ec

[sage-devel] Re: help wanted: Conway Polynomial Database

2007-03-27 Thread David Joyner
I can help for about 1 week starting Thursday. On 3/27/07, William Stein <[EMAIL PROTECTED]> wrote: > > Hi, > > Would anybody like to volunteer to recreate the Conway polynomials > database from the raw text data? I screwed up and lost any code used > to create it. Let me know if you're interes

[sage-devel] Coercion in multivariable polynomial rings

2007-03-29 Thread David Roe
bout an initial subset in the same order? David --~--~-~--~~~---~--~~ To post to this group, send email to sage-devel@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/

[sage-devel] Re: Coercion in multivariable polynomial rings

2007-03-29 Thread David Roe
AIL PROTECTED]> wrote: > On 3/29/07, David Roe <[EMAIL PROTECTED]> wrote: > > > I sent this a little while ago but it didn't seem to go through... > > sorry if it appears twice. > > > What do people think of having a canonical map between multivariate > &g

[sage-devel] Re: Coercion in multivariable polynomial rings

2007-03-29 Thread David Roe
tible. What is the condition for compatibility? David --~--~-~--~~~---~--~~ To post to this group, send email to sage-devel@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.

[sage-devel] File location for polynomials and matrices

2007-03-29 Thread David Roe
Move polynomial_element_generic, etc to rings/polynomial and put the polynomial code in there? Put the matrices in matrix/padic? I don't want to pollute the file space too much by creating lots of files, so... David --~--~-~--~~~---~--~~ To post to this group, send ema

[sage-devel] Re: File location for polynomials and matrices

2007-03-29 Thread David Roe
I can try writing the matrices using SageX... Then working with 1x1 matrices might be faster than working with padics... ;-) David On Mar 29, 11:59 pm, "William Stein" <[EMAIL PROTECTED]> wrote: > On 3/29/07, David Roe <[EMAIL PROTECTED]> wrote: > > > So, I

[sage-devel] Re: File location for polynomials and matrices

2007-03-29 Thread David Roe
, where the algorithm for integer matrices is just the naive algorithm. David On 3/30/07, Robert Bradshaw <[EMAIL PROTECTED]> wrote: > > > On Mar 29, 2007, at 10:15 PM, William Stein wrote: > > > On 3/29/07, Robert Bradshaw <[EMAIL PROTECTED]> wrote: > >> I thin

[sage-devel] Re: File location for polynomials and matrices

2007-03-30 Thread David Roe
t, modified_entries, copy=copy, coerce=coerce) sometime in here. Am I missing something? David --~--~-~--~~~---~--~~ To post to this group, send email to sage-devel@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit

[sage-devel] Re: ode_solver

2007-04-01 Thread David Joyner
On 1/4/07, Joshua Kantor <[EMAIL PROTECTED]> wrote: > > In response to Williams sage-2.0 plan I wanted to describe what I had done > with using gsl to implement a numerical ode solver. I believe that the > patch containing this will be applied after > doing a recent pull or upgrade but I'm not su

[sage-devel] Help with SageX

2007-04-03 Thread David Roe
code. I've included the .pxd file below (I moved the arrow to where it actually points to for those of us without fixed-width fonts). If anybody could point out what I'm doing wrong, I'd appreciate it. David include "../ext/cdefs.pxi" cimport matrix_dense cimport sage

[sage-devel] Random Reals

2007-04-03 Thread David Roe
604023: 4} Naively, this seems like the wrong behavior: they should all be distinct. Now, maybe I just need to set the seed manually. It seems like we could set the seed by default with some other source of randomness though... David --~--~-~--~~~---~--~~ To post to

[sage-devel] [Fwd: [Om] PASCO 2007: News and 2nd Call for Papers]

2007-04-04 Thread David Joyner
ina State University, USA Anton Leykin, University of Minnesota, USA Marc Moreno Maza, University of Western Ontario, Canada Jean-Louis Roch, Universite Joseph Fourier, France David Saunders, University of Delaware, USA William Stein, University of Washington, USA Carlo Traverso, Universi

[sage-devel] Re: Slightly OT: A SAGE Review

2007-04-05 Thread David Joyner
Thank you for posting that Martin. Martin Albrecht wrote: > This might be a bit off topic, but someone wrote a nice review of SAGE at > > http://georgm.blogspot.com/2007/03/sage-computer-algebra-system.html > > Sorry for any inconvenience caused, > Martin > --~--~-~--~~-

[sage-devel] Re: MAKE ME RICH

2007-04-07 Thread David Joyner
I deleted this from the archives and banned him from posting or joining again. On 4/7/07, <[EMAIL PROTECTED]> wrote: > > MAKE ME RICH NOW. > READ THIS AND I WILL > GET STARTED IN 2 MINUTES > > > TURN $6 INTO $15,000 IN ONLY 30 DAYS&HERE'S HOW! > You have most likely seen or heard about t

[sage-devel] Re: Looking For Programming Job?

2007-04-08 Thread David Joyner
I banned this poster, reported it as spam, and deleted the post from the archives. On 4/8/07, mike <[EMAIL PROTECTED]> wrote: > > Find Your Programming Job Vacancy and resources here --> > http://www.jobbankdata.com/job-programming.htm > > > > > --~--~-~--~~~---~--~-

[sage-devel] look what I found in a spanish airport

2007-04-11 Thread David Harvey
http://sage.math.washington.edu/home/dmharvey/sage-in-spain.jpg "Pasión por el software" david --~--~-~--~~~---~--~~ To post to this group, send email to sage-devel@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED

[sage-devel] Re: mirroring problems with sage.math

2007-04-11 Thread David Joyner
The scipy.org mirror seems to be okay, but I too noticed the permission problems (which I think mess up the -d option to rsync). Thanks for pointing this out. Since the binaries are also mirrored, I would imagine we have over-stepped our soft-quota at our scipy.org server (which is 10G). I haven'

[sage-devel] Re: is_zero

2007-04-12 Thread David Roe
On 4/12/07, David Roe <[EMAIL PROTECTED]> wrote: > > I just took a look at the Python 3000 PEP. A couple of points where > things due to be phased out are commonly used in SAGE: > -- raise ValueError, "That number shouldn't be zero" -- now illegal > -- rai

[sage-devel] Re: block sums

2007-04-13 Thread David Harvey
m(B) > [0] I don't understand the problem. In all cases, the number of rows of A plus the number of rows of B equals the number of rows of A.block_sum(B), and similarly for columns. What am I missing? david --~--~-~--~~~---~--~~ To post to this group, s

[sage-devel] Re: SymPy

2007-04-13 Thread David Joyner
On 4/13/07, Timothy Clemans <[EMAIL PROTECTED]> wrote: > > If SymPy was written in C++ and had a Python interface in it what > would be the likely hood of it being the backend for symbolic > computation in SAGE? Are you talking about Yacas? http://www.koders.com/python/fidDCC1B0FBFABC770277A288

[sage-devel] Re: ieShoes.com Shop nike air jordan air force 1 dunk sb bape sta shoes

2007-04-13 Thread David Joyner
He's been banned, reported, and the post removed from the archives. On 4/13/07, Timothy Clemans <[EMAIL PROTECTED]> wrote: > > Too bad google does not send spam to admins for review. > > On 4/13/07, www_ieshoes_com <[EMAIL PROTECTED]> wrote: > > > > > > > > Main Menu Search Basket Content Check

[sage-devel] Re: A patch for rational and integers (Re: sage-2.4.2)

2007-04-13 Thread David Roe
None and max is not None: a = min b = max return self._new_c((b-a)*random() + a) else: Dist = sage.gsl.probability_distribution.RealDistribution(distribution, parameters) return Dist.get_random_element() David --~--~-~--~~--

[sage-devel] Re: SAGE 2.4.2 on cygwin -testall failures

2007-04-14 Thread David Joyner
It appears you have failures in functions.py, combinat.py, and piecewise.py. Except maybe for some stuff at the bottom of the file, I didn't write functions.py. The AUTHOR info etc in the top docstring is missing. However, I did write combinat.py and piecewise.py. All I can say is (a) the comman

[sage-devel] Re: more mod2 row space trouble

2007-04-16 Thread David Harvey
On Apr 16, 2007, at 10:24 PM, Robert Miller wrote: > sage: M = Matrix(GF(2), [[1,1,0],[0,0,1]]) > sage: M.row_space() > > Vector space of degree 3 and dimension 1 over Finite Field of size 2 > Basis matrix: > [1 1 0] yeah

[sage-devel] negative cputime()?

2007-04-19 Thread David Harvey
; -1940.027296 > -1808.707296 > -1677.137296 > -1543.907296 > -1410.187296 > -1279.297296 > -1146.907296 > -1016.587296 > -885.917296 > -752.657296 > -620.757296 > -489.627296 > -358.087296 > -224.227296 > -94.367296 > 36.762704 > > and so on, s

[sage-devel] OLPC

2007-04-23 Thread David Harvey
m for doing educational mathematics on these machines, assuming they could make available servers with enough grunt to run SAGE itself. david --~--~-~--~~~---~--~~ To post to this group, send email to sage-devel@googlegroups.com To unsubscribe from this group,

[sage-devel] Re: 2 notebook bugs

2007-04-23 Thread David Joyner
On 4/23/07, didier deshommes <[EMAIL PROTECTED]> wrote: > > Hi there, > I've noticed 2 problems with tne notebook: ... > > -- When running SAGE from $SAGE_ROOT, every time I create a new > worksheet, it is created in "GAP mode" (a new feature in 2.4.2, I > think). This does not happen when I run

[sage-devel] Coercion and categories in SAGE

2007-04-26 Thread David Roe
ease let me know what you think of all of this, and if you have ideas/suggestions/etc. I have a few spin-off things that I've been thinking about that I'll write follow-up e-mails for. David --~--~-~--~~~---~--~~ To post to this group, send email to sage-

[sage-devel] Re: Coercion and categories in SAGE

2007-04-26 Thread David Roe
manually cast an element of a RealCompletionField into RR. Similarly for ComplexCompletionField (I suppose I choose one of the conjugate embeddings arbitrarily) and pAdicCompletionField. David On 4/26/07, David Roe <[EMAIL PROTECTED]> wrote: > > In the course of thinking about coercion for

[sage-devel] Re: Coercion and categories in SAGE

2007-04-26 Thread David Roe
braic topology? I hear that Singular has a library for doing ext and tor, etc (I think it's called homolog_lib). David On 4/26/07, David Roe <[EMAIL PROTECTED]> wrote: > > In the course of thinking about coercion for p-adic rings, fields and > extensions, I've had some i

[sage-devel] Re: Coercion and categories in SAGE

2007-04-26 Thread David Harvey
On Apr 26, 2007, at 8:55 PM, David Roe wrote: > Please let me know what you think of all of this, and if you have > ideas/suggestions/etc. I have a few spin-off things that I've been > thinking about that I'll write follow-up e-mails for. I just want to pipe up here:

[sage-devel] Re: Coercion and categories in SAGE

2007-04-27 Thread David Roe
a morphism to the default diagram. Etc. When you create a finite field of prime order, diagrams[FiniteFields] will add an entry point from ZZ to the prime field. diagrams[FiniteFields] will then build a lattice of compatibly embedded fields as you create new extension fields of that prime field.

[sage-devel] Re: elliptic curve height bounds

2007-04-27 Thread David Roe
fields at prime ideals in SAGE. This is impacted be the ongoing discussion of augmenting the coercion model. David On 4/27/07, William Stein <[EMAIL PROTECTED]> wrote: > > > Hi, > > John Cremona has implemented a wide range of height bounds for > elliptic curves i

[sage-devel] Re: elliptic curve height bounds

2007-04-27 Thread David Harvey
On Apr 27, 2007, at 12:54 PM, David Roe wrote: > I'd be happy to do it.  Having just read through the code, it looks > like it shouldn't be hard, with the following potential hangups: > Does SAGE have Tamagawa numbers, Kodaira symbols and minimal models > for elliptic

[sage-devel] Re: Coercion and categories in SAGE

2007-04-27 Thread David Roe
sms that should be used by the coercion > > system automatically. This list is would be immutable. So there > > would be a new number field class NumberField_with_embedding(s). > > I think this should be an ability of any parent (with gens?), and one > would not necessar

[sage-devel] [EMAIL PROTECTED]

2007-04-27 Thread David Joyner
. Namely, it is planned to be a developers workshop, with fewer general audience talks. If you think you can make it and are interested in attending, please email me ([EMAIL PROTECTED]) or this list. If there is sufficient interest, then we will try to get funding and take it from there. - David

[sage-devel] Re: Repent, Completely trust in God only and, Love Him with all of your heart.

2007-04-27 Thread David Joyner
This poster has been banned and the post deleted but for some reason google's "report post as spam" feature is not working. On 4/27/07, Secret <[EMAIL PROTECTED]> wrote: > > If you are an atheist, please read the section below with the title > "Why Atheism and Evolution are not good ideas." > > A

[sage-devel] Re: buglet in maxima list

2007-05-06 Thread David Roe
ative indexing will make their lives easier. David On 5/6/07, Nick Alexander <[EMAIL PROTECTED]> wrote: > > > [EMAIL PROTECTED] writes: > > > +1 for consistency across the board. > > +1 from me too. I'd like to learn Pyt

[sage-devel] Re: website redesign

2007-05-06 Thread David Harvey
oftware system" without really losing anything. It does sound a bit like a late-night TV ad. Be a little careful calling MAGMA commercial software. But I don't know how to rephrase it without getting very wordy. On the mailing list pages you have sage-devel listed twice, same with

[sage-devel] Re: website redesign

2007-05-06 Thread David Harvey
On May 6, 2007, at 7:59 AM, Timothy Clemans wrote: > It is taking me along time to get much but what I have so far is at > http://tclemans.nonlogic.org/sage/ No. David --~--~-~--~~~---~--~~ To post to this group, send email to sage-devel@googlegroups.

[sage-devel] Re: website redesign

2007-05-06 Thread David Harvey
xist yet, but why bother if someone just says no. Sorry mate, I just like the basic thrust of William's design better than what you have proposed. I would offer more constructive criticism, but I'm busy with other things. David --~--~-~--~~~---~--~~

[sage-devel] Re: web page redesign

2007-05-06 Thread David Joyner
have more support-related stuff - perhaps a link to the tutorial. +++ William Stein wrote: > Hi Georg and David, > > I'm doing a redesign of the SAGE website to target SAGE much > more at end users rather than develop

[sage-devel] Re: web page redesign

2007-05-06 Thread David Harvey
ndly. One option might be: put the logo where the "SAGE" is now, and then on the next line, instead of Free Open Source Mathematics Software do SAGE: Free Open Source Mathematics Software David --~--~-~--~~~---~--~~ To post to this group, send email

[sage-devel] Re: web page redesign

2007-05-06 Thread David Harvey
ter if it was flush on the bottom of the page. If we do have to have the car, at least we should make it clear that our car is solar-powered, unlike the large commercial manufacturers. David --~--~-~--~~~---~--~~ To post to this group, send email to sage

[sage-devel] Re: web page redesign

2007-05-06 Thread David Harvey
I'm starting to agree with some people on this list, maybe the Big Four links in the middle are simply unnecessary. The menu at the top is pretty short and sweet. I think people can probably find what they want there. BTW the latest iteration is looking pretty gorgeous.

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