[sage-devel] more ask.sagemath spam

Whoever can, please ban user wu324234 - two spams in an hour. I'd be happy to do so if given appropriate privileges; I can do just about everything else :) By the way, to the others like DSM who have been closing questions - please don't close them, flag them; once closed, I can't delete them.

[sage-devel] Re: mathematica 9

On 2012-11-29, rjf wrote: > --=_Part_277_20394233.1354225639789 > Content-Type: text/plain; charset=windows-1252 > Content-Transfer-Encoding: quoted-printable > > Regarding R as a standard for statistics, I found this article > quite interesting > http://www.jstatsoft.org/v13/i07/paper 15 year

Re: [sage-devel] Re: mathematica 9

On Thursday, November 29, 2012 6:43:30 PM UTC-5, Andrea Lazzarotto wrote: > > > > 2012/11/29 rjf > > >> I'm not sure what it is a sign of, if you think that Mathematica is >> copying Sage. > > > It's a sign of the clear fact that FLOSS is awesome and Sage is simply > great. They just can't igno

Re: [sage-devel] Re: mathematica 9

2012/11/29 rjf > I'm not sure what it is a sign of, if you think that Mathematica is > copying Sage. It's a sign of the clear fact that FLOSS is awesome and Sage is simply great. They just can't ignore this. :) Best regards, -- *Andrea Lazzarotto* - http://andrealazzarotto.com* * -- You re

Re: [sage-devel] Re: mathematica 9

Regarding R as a standard for statistics, I found this article quite interesting http://www.jstatsoft.org/v13/i07/paper I'm not sure what it is a sign of, if you think that Mathematica is copying Sage. Mathematica uses open-source code, e.g. GMP, already. The GPL vs LGPL distinction here is, as u

Re: [sage-devel] Re: mathematica 9

On Thursday, November 29, 2012 7:16:47 PM UTC, Dr. David Kirkby wrote: > Given the MathLink API is published, with the intent of allowing > people to write programs to interact with Mathematica, it is not > possible to just link to those libraries, the way jmath does? Perfectly possible, but

[sage-devel] ArithmeticError: 0^0 is undefined (Zmod)

This came up on another ticket: sage: one = Zmod(5)(1) sage: (one*5)^0 -- ArithmeticError ... ArithmeticError: 0^0 is undefined. Some of these were dealt with in, http://trac.sagemath.org/sage_trac/ticket/10772 Sh

Re: [sage-devel] Re: mathematica 9

On 29 November 2012 17:00, Volker Braun wrote: > On Thursday, November 29, 2012 4:06:35 PM UTC, jason wrote: >> >> What if they wrote an *GPL* component that linked to R, but then talked >> back to mathematica over a socket? That wouldn't be a violation, right? > > > Thats fine. That part doesn't

[sage-devel] Re: Extra loop created in a graph

Thanks, Tom and Nathann, for the replies. I'll have a look at the patch later today. Yes, I agree, all graphs should be "simple graphs." ;-) Rob On Thursday, November 29, 2012 5:24:26 AM UTC-8, Nathann Cohen wrote: > > This is now ticket #13775, which is waiting to be reviewed. > > Sorry for

Re: [sage-devel] Re: mathematica 9

2012/11/29 Jason Grout > Why can't you use urllib2, which is built into Python (and hence comes > with Sage)? > > http://docs.python.org/2/**howto/urllib2.html > Because... erhm... I didn't know about that. :P Thank you for giving me the link. Actual

[sage-devel] Re: How do you remove attachments that become irrelevant at some point from a trac ticket?

kcrisman writes: > On Thursday, November 29, 2012 7:41:46 AM UTC-5, kannappan sampath > wrote: > > Hello, > I wanted to ask the mailing list if there is a way to remove > attachments that become irrelevant, either due to a completely > new patch or a patch that coalesces all the p

Re: [sage-devel] Re: mathematica 9

Hey, On Thursday, November 29, 2012 5:43:53 PM UTC+1, Andrea Lazzarotto wrote: > > JesusTorrado, then I apologize for that. Thanks for clarifying. :-) > It's nothing :) Giving an email the correct tone is tricky. Cheers, Jesús Torrado -- You received this message because you are subscribed to t

Re: [sage-devel] Re: mathematica 9

Le 29/11/2012 07:46, mhampton a écrit : "So in Mathematica 9, one thing we’ve added is built-in integration with the R statistics language." You just can't compete with it, you have to integrate it. I love the pun. Snark on #sagemath -- You received this message because you are subscribed

[sage-devel] Re: mathematica 9

On Thursday, November 29, 2012 4:06:35 PM UTC, jason wrote: > What if they wrote an *GPL* component that linked to R, but then talked > back to mathematica over a socket? That wouldn't be a violation, right? > Thats fine. That part doesn't even have to be GPL, only a GPL compatible license. O

[sage-devel] Re: mathematica 9

On 11/29/12 7:11 AM, Andrea Lazzarotto wrote: They also have a URLFetch thing, which Sage doesn't still have. This doesn't mean it can't be added in the future (in the latter case, just by including cURL). Why can't you use urllib2, which is built into Python (and hence comes with Sage)? htt

[sage-devel] Re: mathematica 9

On 11/29/12 3:45 AM, Andrea Lazzarotto wrote: BTW the fact they also started to copy Sage features (such as R integration) is a clear signal. I guess the usual correlation vs. causation argument [1] applies here (i.e., they may not be copying...). It's probably more likely that they were c

[sage-devel] Re: mathematica 9

On 11/29/12 3:45 AM, Andrea Lazzarotto wrote: BTW the fact they also started to copy Sage features (such as R integration) is a clear signal. I thought the same about their coordinate transformation capabilities... :) They go beyond our current capabilities now, but it is interesting to see

Re: [sage-devel] Re: mathematica 9

JesusTorrado, then I apologize for that. Thanks for clarifying. :-) Andrea Lazzarotto (inviato da Android) Il giorno 29/nov/2012 14:28, "JesusTorrado" ha scritto: > > > On Thursday, November 29, 2012 2:11:03 PM UTC+1, Andrea Lazzarotto wrote: >> >> 2012/11/29 JesusTorrado >> >>> There is no suc

[sage-devel] Re: mathematica 9

On 11/29/12 9:58 AM, Volker Braun wrote: R does have a shared library interface. For example, RInside (http://dirk.eddelbuettel.com/code/rinside.html) is a wrapper to make that easy to use in your own C++ programs. Obviously this is not what Mathematica is using, as it would be in conflict with t

Re: [sage-devel] mathematica 9

On Thursday, November 29, 2012 3:35:08 PM UTC, Dr. David Kirkby wrote: > http://robotics.caltech.edu/~radford/jmath/ > which uses the Mathematica API (MathLink), which works a lot better I > feel. > While you can link together anything you like in private, you'd find yourself in violation of

Re: [sage-devel] mathematica 9

On 28 November 2012 20:45, Jason Grout wrote: > Just FYI, Mathematica 9 is out today: > http://www.wolfram.com/mathematica/new-in-9/ Since Sage integrates with Mathematica, the integration should be tested against version 9. I don't have version 9. I found the integration of Sage with Mathematic

Re: [sage-devel] Re: mathematica 9

On Thursday, November 29, 2012 1:14:16 PM UTC, Timo Kluck wrote: > So I'm guessing they use something like pexpect (it says J/Link on the > website). I'm curious whether that's enough to keep Mathematica from being > a derivative work in the GPL sense It is, see http://www.gnu.org/licenses/gpl

Re: [sage-devel] Re: mathematica 9

Op donderdag 29 november 2012 14:17:49 UTC+1 schreef Andrea Lazzarotto het volgende: > They could just call a different executable with a script that intercepts the output and then parses it. Yes, I suggested the same thing. My point was that I'm not entirely sure that the technical detail of li

Re: [sage-devel] Re: mathematica 9

On Thursday, November 29, 2012 2:11:03 PM UTC+1, Andrea Lazzarotto wrote: > > 2012/11/29 JesusTorrado > > >> There is no such in Sage, is there? > > > So? What does it have to do with the fact that R is unbeatable about > statistics? Nothing, just highlighting another new feature of Mathematic

[sage-devel] Re: Extra loop created in a graph

This is now ticket #13775, which is waiting to be reviewed. Sorry for that, that's my mistake But I do really hate loops and multiple edges :-/ Nathann On Thursday, November 29, 2012 2:14:22 PM UTC+1, Nathann Cohen wrote: > > > Anybody recognise this bug? I don't see anything in Trac. >> >

Re: [sage-devel] Re: mathematica 9

2012/11/29 Timo Kluck > This is an interesting development from a licensing perspective, though. R > is distributed under the GPL, not the LGPL, so they definitely can't be > using a shared library interface to hook into it. They could just call a different executable with a script that interce

[sage-devel] Re: How do you remove attachments that become irrelevant at some point from a trac ticket?

On Thursday, November 29, 2012 7:41:46 AM UTC-5, kannappan sampath wrote: > > Hello, > I wanted to ask the mailing list if there is a way to remove attachments > that become irrelevant, either due to a completely new patch or a patch > that coalesces all the patches into one, from a trac tick

Re: [sage-devel] Extra loop created in a graph

Helloo ! I ran into something similar a little while back in sage-5.0 > > sage: G = Graph([(0,1,0),(0,1,0)]) > sage: G.num_edges() > 4 > > but IIRC, it was fixed in 5.3. > Yep ! sage: G = Graph([(0,1,0),(0,1,0)]) sage: G.num_edges() 2 Nathann > > -- You received this message beca

[sage-devel] Re: Extra loop created in a graph

> Anybody recognise this bug? I don't see anything in Trac. > Yes. It is a bug that occurs when your graphs have loops. Having loops is always a bad idea. Loops should be forbidden. Multiedges too. Labels too. I'll give it a look. God I hate loops. Nathann -- You received this message bec

Re: [sage-devel] Re: mathematica 9

Op donderdag 29 november 2012 10:45:37 UTC+1 schreef Andrea Lazzarotto het volgende: > > 2012/11/29 mhampton > > >> "So in Mathematica 9, one thing we’ve added is built-in integration >> with the R statistics language." -- that's interesting. I think R has >> really won in the realm of advanced

Re: [sage-devel] Re: mathematica 9

2012/11/29 JesusTorrado > There is no such in Sage, is there? So? What does it have to do with the fact that R is unbeatable about statistics? And it doesn't have to do with the fact that open source is better in general for a lot of well-known reasons (both technical and not technical). They

Re: [sage-devel] Re: mathematica 9

Mpf! They have tensors now with custom symmetry properties! There is no such in Sage, is there? Cheers, Jesús Torrado -- You received this message because you are subscribed to the Google Groups "sage-devel" group. To post to this group, send email to sage-devel@googlegroups.com. To unsubscrib

[sage-devel] How do you remove attachments that become irrelevant at some point from a trac ticket?

Hello, I wanted to ask the mailing list if there is a way to remove attachments that become irrelevant, either due to a completely new patch or a patch that coalesces all the patches into one, from a trac ticket? Thank you, ~KnS -- You received this message because you are subscribed to the Go

Re: [sage-devel] Re: mathematica 9

2012/11/29 mhampton > "So in Mathematica 9, one thing we’ve added is built-in integration > with the R statistics language." -- that's interesting. I think R has > really won in the realm of advanced statistics. You just can't > compete with it, you have to integrate it. > Open source is the f