Re: [sage-support] Re: Sage Survey 2009
On Sat, Nov 21, 2009 at 10:56 AM, rjf wrote: > Harald asks, on Nov 19, 2009 what software readers "know". He oddly > omits the several free computer algebra systems that are available. I > assume that it is because he is trying to promulgate the impression > that Sage is the only free system software alternative to Mathematica > and Maple. He also omits the (to me) logical entries for other > possible programming language familiarity, e.g. C, C++, Java, PHP, > Ruby, Perl, and Lisp, among others. > > > Presuming it is entirely innocent that Harald omits Axiom, Reduce, and > Maxima from this list, it would be easy enough to change the survey, > and correct the omissions. > Harald, in private email, says he has 150 responses already and has > decided not change the survey. > It is (here on the US west coast) the morning of Sat Nov 21, so the > survey hasn't been out that long. Oh well. You seem incredibly concerned about the questions on the survey. To assuage your fears, it might help if we stop and think about the *purpose* of the survey. You might think we're going to write a paper based on it, or that we're going to publish a bunch of charts and tables on a webpage about the results of the survey. Don't worry -- the survey exists for one, and only one, reason: we would like to get systematic feedback from users and potential users so that we can make Sage a better system. That's it. Think of it like filling out a form after staying at the LA Hilton. The form would ask you about your stay at the Hilton, and might very well omit questions about Axiom, Reduce, and Maxima. -- William -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org
Re: [sage-support] Question about gcd and xgcd.
On Sun, Nov 22, 2009 at 4:57 PM, Ricky Farr wrote: > Dear All, > > I'd like to sincerely thank you for your help before hand. I'm having > some issues that need to be straightened out. I was under the > impression that xgcd(a,b) returned (g,s,t) so that g = s*a + t*b, > where g=gcd(a,b). Please review the following code, and tell me why > this happens: > > sage: Q. = PolynomialRing(ZZ); > sage: gcd(x-2,x^3+2*x^2); > 1 > sage: g,s,t = xgcd(x-2,x^3+2*x^2); > sage: g > 16 > sage: s*(x-2)+t*(x^3+2*x^2) > 16 > > I was under the impression, like I said that g would have been equal > to 1. Why is g, 16? The ring ZZ[x] is not a principal ideal domain (e.g., the ideal (2, x) isn't principal), so xgcd *can't* in general return polynomials s, t such that g = s*a+t*b.A simple example is a=2*x and b=x^2. Then x is the gcd, but you can't write x as a ZZ[x] linear combination of 2*x and x^2, since the linear term of s*(2*x) + t*x^2 is even. What it does return is the next best thing, which is s, t such that s*a + t*b = resultant(a,b), assuming a, b are coprime (if they aren't, rescale so they are, do the above, then multiply through). Note that Sage just calls the FLINT library, and this behavior of xgcd is documented there. I did just maybe (?) find a bug in FLINT though (and certainly one in sage): sage: gcd(Q(2),x^2) 1 sage: xgcd(Q(2),x^2) Doing the same using NTL works fine: sage: Q. = PolynomialRing(ZZ,implementation="NTL") sage: type(x) sage: gcd(Q(2),x^2) 1 sage: xgcd(Q(2),x^2) (4, 2, 0) sage: xgcd(x-2, x^3+2*x^2) (16, -x^2 - 4*x - 8, 1) So, the docs in Sage need to change to correctly define xgcd over a non-PID. Also, there is maybe a serious bug in FLINT. This is now: http://trac.sagemath.org/sage_trac/ticket/7517 -- William -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org
[sage-support] Question about gcd and xgcd.
Dear All, I'd like to sincerely thank you for your help before hand. I'm having some issues that need to be straightened out. I was under the impression that xgcd(a,b) returned (g,s,t) so that g = s*a + t*b, where g=gcd(a,b). Please review the following code, and tell me why this happens: sage: Q. = PolynomialRing(ZZ); sage: gcd(x-2,x^3+2*x^2); 1 sage: g,s,t = xgcd(x-2,x^3+2*x^2); sage: g 16 sage: s*(x-2)+t*(x^3+2*x^2) 16 I was under the impression, like I said that g would have been equal to 1. Why is g, 16? Thank You, Rick -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org
[sage-support] Re: Sage Survey 2009
Harald asks, on Nov 19, 2009 what software readers "know". He oddly omits the several free computer algebra systems that are available. I assume that it is because he is trying to promulgate the impression that Sage is the only free system software alternative to Mathematica and Maple. He also omits the (to me) logical entries for other possible programming language familiarity, e.g. C, C++, Java, PHP, Ruby, Perl, and Lisp, among others. Presuming it is entirely innocent that Harald omits Axiom, Reduce, and Maxima from this list, it would be easy enough to change the survey, and correct the omissions. Harald, in private email, says he has 150 responses already and has decided not change the survey. It is (here on the US west coast) the morning of Sat Nov 21, so the survey hasn't been out that long. Oh well. -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org
[sage-support] Re: bug: derivatives as dictionary keys
Sweet, Burcin. I'll check out your patch. Can you increase the derivative orders to 20 something? Alex On Nov 23, 7:30 am, Burcin Erocal wrote: > Hi, > > On Sat, 21 Nov 2009 14:02:16 +0100 > > Burcin Erocal wrote: > > I can't believe I'm looking at these hashes for the third time. I > > finally took some time to think about this, and found an (almost) > > perfect hash function to replace my previous braindead implementation. > > I hope we won't run into this problem again. :) > > > This is now #7508: > > >http://trac.sagemath.org/sage_trac/ticket/7508 > > There is a new pynac package linked from that ticket. You need to apply > the patch from #7490 before you can run Sage with it. > > The new hash function doesn't have any collisions for a symbolic > function with 10 arguments, up to derivatives of order 11. I used a > customized FNV hash [1], with a prime multiplier chosen to accommodate > the low integer values we get for each entry of the parameter set. > > [1]http://isthe.com/chongo/tech/comp/fnv/ > > Cheers, > Burcin -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org
[sage-support] Re: Problem in running sage notebook in secure mode on Mac OS X
Sorry, I wasn't very clear, by "upgrade" I mean I downloaded sage-4.2.1 sage-4.2.1-osx-10.5-32bit-i386-Darwin.dmg (using metalinks) then drag-and-drop as usual. But that I got the aforementioned problem. Since I couldn't fix the problem. Later, I indeed "upgraded" sage from prompt and the problem went away... however there is another thing puzzling me: After the upgrade, sage is upgraded just to 4.1.2 however, when I started the notebook, it shows version 4.2.1. Why is that, just a typo? On Nov 22, 11:33 am, William Stein wrote: > On Sun, Nov 22, 2009 at 9:48 AM, pong wrote: > > I have just upgraded to Sage 4.2.1 and when I tried to run the > > notebook server securely by > > Instead of upgrading, please download and install sage-4.2.1. > > -- William > > > > > > > notebook(secure=True, open_viewer=False) > > > SAGE complains: > > > > > * * > > * Open your web browser tohttps://localhost:8000 * > > * * > > > > There is an admin account. If you do not remember the password, > > quit the notebook and type notebook(reset=True). > > Note: GNUTLS not available. > > Traceback (most recent call last): > > File "/Applications/sage/local/lib/python2.6/site-packages/twisted/ > > application/app.py", line 694, in run > > runApp(config) > > > the error message goes on and on. But I'd rather not posting all here. > > Any help on this? > > Also, 1) the notebook server starts without problem in the non-secure > > mode. > > 2) I did install guntls via Darwin Port. How can I make it > > available for sage (it complaints that gnutls is not available). > > > Thanks in advance > > > -- > > To post to this group, send email to sage-support@googlegroups.com > > To unsubscribe from this group, send email to > > sage-support-unsubscr...@googlegroups.com > > For more options, visit this group > > athttp://groups.google.com/group/sage-support > > URL:http://www.sagemath.org > > -- > William Stein > Associate Professor of Mathematics > University of Washingtonhttp://wstein.org -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org
Re: [sage-support] Re: Ctrl-Backspace behavior
> > > I greatly appreciate your pointing out the ctrl-backspace discrepancy. > > However, I'm concerned that your level of rudeness is not appropriate > for this list. > > -- William > > Okay, I'm sorry. I'll try to be more polite. Ram. -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org
Re: [sage-support] Problem in running sage notebook in secure mode on Mac OS X
On Sun, Nov 22, 2009 at 9:48 AM, pong wrote: > I have just upgraded to Sage 4.2.1 and when I tried to run the > notebook server securely by Instead of upgrading, please download and install sage-4.2.1. -- William > > notebook(secure=True, open_viewer=False) > > SAGE complains: > > > * * > * Open your web browser to https://localhost:8000 * > * * > > There is an admin account. If you do not remember the password, > quit the notebook and type notebook(reset=True). > Note: GNUTLS not available. > Traceback (most recent call last): > File "/Applications/sage/local/lib/python2.6/site-packages/twisted/ > application/app.py", line 694, in run > runApp(config) > > the error message goes on and on. But I'd rather not posting all here. > Any help on this? > Also, 1) the notebook server starts without problem in the non-secure > mode. > 2) I did install guntls via Darwin Port. How can I make it > available for sage (it complaints that gnutls is not available). > > Thanks in advance > > -- > To post to this group, send email to sage-support@googlegroups.com > To unsubscribe from this group, send email to > sage-support-unsubscr...@googlegroups.com > For more options, visit this group at > http://groups.google.com/group/sage-support > URL: http://www.sagemath.org -- William Stein Associate Professor of Mathematics University of Washington http://wstein.org -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org
Re: [sage-support] Re: Ctrl-Backspace behavior
On Sun, Nov 22, 2009 at 11:15 AM, ram.rac...@gmail.com wrote: > I'm not too experienced with Linux, but now I opened up the Linux GUI > on my Sage VM, and tried a bunch of text editors and a web browser. > They all respect ctrl-backspace as deleting a word. Why does Sage do > differently? Why? Is this the right place to try and change the > accepted use of ctrl-backspace? Maybe we should use ctrl-w for copy > and ctrl-z for paste, just for kicks? > > Ram. I greatly appreciate your pointing out the ctrl-backspace discrepancy. However, I'm concerned that your level of rudeness is not appropriate for this list. -- William -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org
[sage-support] Re: Ctrl-Backspace behavior
I'm not too experienced with Linux, but now I opened up the Linux GUI on my Sage VM, and tried a bunch of text editors and a web browser. They all respect ctrl-backspace as deleting a word. Why does Sage do differently? Why? Is this the right place to try and change the accepted use of ctrl-backspace? Maybe we should use ctrl-w for copy and ctrl-z for paste, just for kicks? Ram. On Nov 22, 8:58 pm, Michael Orlitzky wrote: > ram.rac...@gmail.com wrote: > > It's accepted, at least on Windows, that ctrl-backspace deletes a word > > (And sometimes a bunch of spaces/returns around it.) This is true in > > IDEs, and actually in every text area in almost every program I can > > think of. > > Somewhat interesting back-story: > > http://blogs.msdn.com/oldnewthing/archive/2007/10/11/5395501.aspx > > As a result, most Windows programs include this functionality by way of > the default Windows edit controls. Exceptions do occur in cases where a > custom edit control is used (i.e. IDEs), but for the most part, it works. > > On Linux, this is an Emacs keybinding that has found its way into at > least three of the major toolkits, GTK, QT, and Wx. I don't know whether > it was inspired by Emacs, or simply meant to mimic the Windows edit control. > > On the web, CKEditor and TinyMCE include it per user request. > > On Mac, who knows. > > It could be worse. As an Emacs user, attempting to backspace over a word > typically results in bolding the entire document and printing it down > the hall while I'm helpless to intervene because the File->Save As menu > has opened. -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org
[sage-support] Re: Something like Mathematica's `Interact`?
On Nov 21, 3:53 pm, William Stein wrote: > I have the impression that Maplets are somewhat different than > Mathematica's Manipulate and Sage's @interact. I'm not so familiar > with them -- I read about them online just now, and it seems like they > are basically a Maple interface to a subset of the Java Swing GUI API. > I *just* tried to use one from the official Maple website, and it > promptly completely crashed Firefox (latest version, on OS X). > Luckily gmail saved my message so I didn't loose this email! > There is also Google's Mapplets, not to be confused with Maple Maplets http://code.google.com/apis/maps/documentation/mapplets/ http://www.adeptscience.co.uk/products/mathsim/maple/primes/maplets.html Wonder if MapleSoft can bring a lawsuit against google for name infringement here? This is one way Maplesoft can make few easy millions of dollars? :) Notice when searching for "maple maplets", google suggests a name correction to "mapplets". Very smart. I do not dare touch a Maple maplet any more, since every time I tried, all sort of Java errors popup in my browser, many times freezing it or worst. I never did like Maplets myself. I need to try sage interact more sometime. But I do like Mathematica Manipulate. It is complicated and it takes time to learn. > > William --Nasser -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org
[sage-support] Re: Something like Mathematica's `Interact`?
On Nov 21, 3:53 pm, William Stein wrote: > I have the impression that Maplets are somewhat different than > Mathematica's Manipulate and Sage's @interact. I'm not so familiar > with them -- I read about them online just now, and it seems like they > are basically a Maple interface to a subset of the Java Swing GUI API. > I *just* tried to use one from the official Maple website, and it > promptly completely crashed Firefox (latest version, on OS X). > Luckily gmail saved my message so I didn't loose this email! > There is also Google's Mapplets, not to be confused with Maple Maplets http://code.google.com/apis/maps/documentation/mapplets/ http://www.adeptscience.co.uk/products/mathsim/maple/primes/maplets.html Wonder if MapleSoft can bring a lawsuit against google for name infringement here? This is one way Maplesoft can make few easy millions of dollars? :) Notice when searching for "maple maplets", google suggests a name correction to "mapplets". Very smart. I do not dare touch a Maple maplet any more, since every time I tried, all sort of Java errors popup in my browser, many times freezing it or worst. I never did like Maplets myself. I need to try sage interact more sometime. But I do like Mathematica Manipulate. It is complicated and it takes time to learn. > > William --Nasser -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org
Re: [sage-support] Re: Ctrl-Backspace behavior
ram.rac...@gmail.com wrote: > It's accepted, at least on Windows, that ctrl-backspace deletes a word > (And sometimes a bunch of spaces/returns around it.) This is true in > IDEs, and actually in every text area in almost every program I can > think of. Somewhat interesting back-story: http://blogs.msdn.com/oldnewthing/archive/2007/10/11/5395501.aspx As a result, most Windows programs include this functionality by way of the default Windows edit controls. Exceptions do occur in cases where a custom edit control is used (i.e. IDEs), but for the most part, it works. On Linux, this is an Emacs keybinding that has found its way into at least three of the major toolkits, GTK, QT, and Wx. I don't know whether it was inspired by Emacs, or simply meant to mimic the Windows edit control. On the web, CKEditor and TinyMCE include it per user request. On Mac, who knows. It could be worse. As an Emacs user, attempting to backspace over a word typically results in bolding the entire document and printing it down the hall while I'm helpless to intervene because the File->Save As menu has opened. -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org
Re: [sage-support] Re: bug: derivatives as dictionary keys
Hi, On Sat, 21 Nov 2009 14:02:16 +0100 Burcin Erocal wrote: > I can't believe I'm looking at these hashes for the third time. I > finally took some time to think about this, and found an (almost) > perfect hash function to replace my previous braindead implementation. > I hope we won't run into this problem again. :) > > This is now #7508: > > http://trac.sagemath.org/sage_trac/ticket/7508 There is a new pynac package linked from that ticket. You need to apply the patch from #7490 before you can run Sage with it. The new hash function doesn't have any collisions for a symbolic function with 10 arguments, up to derivatives of order 11. I used a customized FNV hash [1], with a prime multiplier chosen to accommodate the low integer values we get for each entry of the parameter set. [1] http://isthe.com/chongo/tech/comp/fnv/ Cheers, Burcin -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org
Re: [sage-support] problem with sage -upgrade
Thanks, William! Unfortunately, this did not solve the issue. I am still getting the message "TypeError: Unable to start maxima". Stan William Stein wrote: > On Fri, Nov 20, 2009 at 1:58 AM, Stan Schymanski wrote: > >> Did the upgrade still work for you? >> Mine ended normally, but if I start the notebook and want to do >> something, I get the message that maxima could not be started. I'll have >> to compile from source (again). >> > > Try forcing rebuilding of the maxima spkg. > > sage -f maxima-5.19.1.p0 > > William > > > >> Cheers >> Stan >> >> Minh Nguyen wrote: >> >>> Hi Stan, >>> >>> On Thu, Nov 19, 2009 at 9:31 PM, Stan Schymanski wrote: >>> >>> Dear all, I compiled sage 4.2 from source on my Macbook Pro with OSX 10.4.11 and when I tried sage -upgrade, I was asked to enter a commit message. I aborted (by typing :q) and the upgrade is continuing now, but this does not seem normal. Did anyone else experience something similar? >>> Yes. I was asked to enter a commit message because the README file has >>> changed. I suspect that the executable bits have changed. The README >>> file should have no executable bits. >>> >>> >>> >> -- >> To post to this group, send email to sage-support@googlegroups.com >> To unsubscribe from this group, send email to >> sage-support-unsubscr...@googlegroups.com >> For more options, visit this group at >> http://groups.google.com/group/sage-support >> URL: http://www.sagemath.org >> > > > > -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org
[sage-support] Re: Ctrl-Backspace behavior
It's accepted, at least on Windows, that ctrl-backspace deletes a word (And sometimes a bunch of spaces/returns around it.) This is true in IDEs, and actually in every text area in almost every program I can think of. On Nov 22, 7:55 pm, "ma...@mendelu.cz" wrote: > On 22 lis, 14:59, "ram.rac...@gmail.com" wrote: > > > Why when I do ctrl-backspace it backs up into the upper cell, instead > > of deleting a word? > > The answer is simple: ctrl+backspace is shortcut for joining cells. > > Why shhould ctrl+backspace delete word? > > Robert Marik -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org
[sage-support] Re: Ctrl-Backspace behavior
On 22 lis, 14:59, "ram.rac...@gmail.com" wrote: > Why when I do ctrl-backspace it backs up into the upper cell, instead > of deleting a word? The answer is simple: ctrl+backspace is shortcut for joining cells. Why shhould ctrl+backspace delete word? Robert Marik -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org
[sage-support] Problem in running sage notebook in secure mode on Mac OS X
I have just upgraded to Sage 4.2.1 and when I tried to run the notebook server securely by notebook(secure=True, open_viewer=False) SAGE complains: * * * Open your web browser to https://localhost:8000 * * * There is an admin account. If you do not remember the password, quit the notebook and type notebook(reset=True). Note: GNUTLS not available. Traceback (most recent call last): File "/Applications/sage/local/lib/python2.6/site-packages/twisted/ application/app.py", line 694, in run runApp(config) the error message goes on and on. But I'd rather not posting all here. Any help on this? Also, 1) the notebook server starts without problem in the non-secure mode. 2) I did install guntls via Darwin Port. How can I make it available for sage (it complaints that gnutls is not available). Thanks in advance -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org
[sage-support] Re: Something like Mathematica's `Interact`?
On Nov 21, 5:11 pm, William Stein wrote: > Let's get real about this math software patent discussion. > Mathematica, Magma, and Maple have no software patents. > Matlab, on the other hand... > This link gives *97* (!) registered patents by Mathworks (makers of MATLAB): > ... > Let's put Mathworks out of business. This seems to me to be an overly harsh statement towards a generally respectable company. While no company is perfect, The Mathworks has long been a huge supporter of some of the most fundamental and important open source, mathematical software. Cleve Moler, who founded The Mathworks, was one of the primary authors of two important and freely distributable computational libraries in the 1970s: Linpack (the predecessor to Lapack) and Eispack. While no member of The Mathworks is listed as an author of Lapack, the company plays an active role in its development. I believe the same is true of Blas. Moler has long been on the directory board of Netlib, which is certainly the largest repository of freely available software for numerical analysis in existence, and a number of other Mathworks employees are involved with Netlib as well. Mark McClure -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org
[sage-support] Ctrl-Backspace behavior
Why when I do ctrl-backspace it backs up into the upper cell, instead of deleting a word? -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org
Re: [sage-support] Re: publishing a program written with Sage in complement of a scientific article
On Sat, Nov 21, 2009 at 11:20 PM, Laurent wrote: > If someone think that Sage will be improved by knowing 10 matrices of > so(2,3), ok, I will think about making it well. If not, I will follow > the way of Carlo, and register myself in the list of article that cite > Sage :) Also note that you can give a URL to the latest version of the source of an arXiv paper (e.g. my paper http://arxiv.org/abs/0712.0233 the source URL http://arxiv.org/e-print/0712.0233v1 for the first version and http://arxiv.org/e-print/0712.0233 refers to the latest version). So you can upload a paper and then add the source URL to your references. If you do that quickly (within the first 24 hours I think) then arxiv.org only announces one version of your paper so it doesn't look like you made a mistake. Hope that's clear :) -- Carlo Hamalainen http://carlo-hamalainen.net -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org
