[sage-devel] Re: symbolic series help needed
... or when s/he is clever then they would also try tab completion. Yes that's what I mean: x.(TAB): ... x.save x.simplify_radical x.step x.seriesx.simplify_rational x.subs x.show x.simplify_real x.subs_expr ... -- You received this message because you are subscribed to the Google Groups sage-devel group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-devel+unsubscr...@googlegroups.com. To post to this group, send email to sage-devel@googlegroups.com. Visit this group at http://groups.google.com/group/sage-devel. For more options, visit https://groups.google.com/d/optout.
[sage-devel] Re: symbolic series help needed
Hi Ralf, On 2015-04-01, Ralf Stephan gtrw...@gmail.com wrote: Symbolic series is what the user often encounters first when looking in Sage for power series. I disagree with that statement. A user who wants to know how to do something in Sage is supposed to search the documentation, or when s/he is clever then they would also try tab completion. Here, we talk about power series. A search on www.sagemath.org yields power series, power series methods, lazy power series and multivariate power series. Tab completion yields sage: powertab power power_mod powerset (which is not what we are looking for) and sage: Powertab PowerSeries PowerSeriesRing In fact, even though I am a somewhat experienced Sage user, I didn't even know that symbolic series exist. Best regards, Simon -- You received this message because you are subscribed to the Google Groups sage-devel group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-devel+unsubscr...@googlegroups.com. To post to this group, send email to sage-devel@googlegroups.com. Visit this group at http://groups.google.com/group/sage-devel. For more options, visit https://groups.google.com/d/optout.
[sage-devel] Re: symbolic series help needed
On Wednesday, April 1, 2015 at 10:57:35 AM UTC+2, Simon King wrote: In fact, even though I am a somewhat experienced Sage user, I didn't even know that symbolic series exist. And they are at the moment the only way to get the formal series expansion of any nontrivial function. To repeat: I don't want the full functionality for them, just to be able to convert them to/from PowerSeries. So that one can do the real work using PowerSeries. -- You received this message because you are subscribed to the Google Groups sage-devel group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-devel+unsubscr...@googlegroups.com. To post to this group, send email to sage-devel@googlegroups.com. Visit this group at http://groups.google.com/group/sage-devel. For more options, visit https://groups.google.com/d/optout.
[sage-devel] Re: symbolic series help needed
On Wednesday, April 1, 2015 at 10:57:35 AM UTC+2, Simon King wrote: Hi Ralf, On 2015-04-01, Ralf Stephan gtr...@gmail.com javascript: wrote: Symbolic series is what the user often encounters first when looking in Sage for power series. I disagree with that statement. A user who wants to know how to do something in Sage is supposed to search the documentation, or when s/he is clever then they would also try tab completion. Perhaps confusingly, http://www.sagemath.org/doc/constructions/calculus.html#power-series offers .taylor() and .powerseries() without mentioning .series() or Sage's PowerSeries. That's four different notions of power series already... Fredrik -- You received this message because you are subscribed to the Google Groups sage-devel group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-devel+unsubscr...@googlegroups.com. To post to this group, send email to sage-devel@googlegroups.com. Visit this group at http://groups.google.com/group/sage-devel. For more options, visit https://groups.google.com/d/optout.
[sage-devel] symbolic series help needed
Symbolic series is what the user often encounters first when looking in Sage for power series. They are somewhat limited with respect to Sage's PowerSeries and LaurentSeries. You see you cannot do arithmetics at all with symbolic series: sage: s = SR(1/(1-x)).series(x,5); s 1 + 1*x + 1*x^2 + 1*x^3 + 1*x^4 + Order(x^5) sage: 2*s 2*(1 + 1*x + 1*x^2 + 1*x^3 + 1*x^4 + Order(x^5)) Realistic behaviour must be added on Pynac level, it's simply not there at the moment, if I understand correctly. For that reason it would be helpful if someone could at least review those tickets that deal with symbolic--dedicated ring conversion (#10846 http://trac.sagemath.org/ticket/10846, #16203 http://trac.sagemath.org/ticket/16203, #17402 http://trac.sagemath.org/ticket/17402 and maybe #17400 http://trac.sagemath.org/ticket/17400 and #17659 http://trac.sagemath.org/ticket/17659). I cannot do this: I am the author 8P Regards, -- You received this message because you are subscribed to the Google Groups sage-devel group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-devel+unsubscr...@googlegroups.com. To post to this group, send email to sage-devel@googlegroups.com. Visit this group at http://groups.google.com/group/sage-devel. For more options, visit https://groups.google.com/d/optout.
[sage-devel] Re: symbolic series help needed
On Wednesday, April 1, 2015 at 2:07:34 PM UTC+2, Fredrik Johansson wrote: Perhaps confusingly, http://www.sagemath.org/doc/constructions/calculus.html#power-series offers .taylor() and .powerseries() without mentioning .series() or Sage's PowerSeries. Thanks. I attempted an improvement: http://trac.sagemath.org/ticket/18098 -- You received this message because you are subscribed to the Google Groups sage-devel group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-devel+unsubscr...@googlegroups.com. To post to this group, send email to sage-devel@googlegroups.com. Visit this group at http://groups.google.com/group/sage-devel. For more options, visit https://groups.google.com/d/optout.
Re: [sage-devel] For french readers
Anyways, somewhat limited is an understatement. To be fair, the french financement est pour le moins limité means something like funding is limited, to say the least. Don't trust google ! :-) pierre -- You received this message because you are subscribed to the Google Groups sage-devel group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-devel+unsubscr...@googlegroups.com. To post to this group, send email to sage-devel@googlegroups.com. Visit this group at http://groups.google.com/group/sage-devel. For more options, visit https://groups.google.com/d/optout.
[sage-devel] Re: git currently unusable on trac?
Hey Simon, You could just do git directly: git pull git push trac local_branch_name:remote_branch_name You could also replace local_branch_name with HEAD (which pushes whatever your current branch is). If git pull doesn't work (I think it should since the branch is linked to the one on trac), you can run: git pull trac remote_branch_name Best, Travis On Tuesday, March 31, 2015 at 1:01:40 PM UTC-7, Simon King wrote: Hi Volker, On 2015-03-31, Volker Braun vbrau...@gmail.com javascript: wrote: It seems like git push fails with an exit code != 0, which you interpret as working. What is the console output? You can add git push --verbose git push --verbose Versende nach g...@trac.sagemath.org:sage.git Enter passphrase for key '/home/king/.ssh/id_rsa': To g...@trac.sagemath.org:sage.git = [up to date] t/16453/cythonize_quiver_paths - u/SimonKing/cythonize_quiver_paths Everything up-to-date Ah! It is pushing to my own branch on trac, not to the public branch that is attached to the ticket! So, what I should do is to change the branch field on the ticket, right? Best regards, Simon -- You received this message because you are subscribed to the Google Groups sage-devel group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-devel+unsubscr...@googlegroups.com. To post to this group, send email to sage-devel@googlegroups.com. Visit this group at http://groups.google.com/group/sage-devel. For more options, visit https://groups.google.com/d/optout.
[sage-devel] Re: 1000*pi Infinity is false
Hi, Already bool( pi Infinity) returns False. See the discussion in this thread https://groups.google.com/d/msg/sage-devel/Oip2hzvjFZQ/suGGtwQum0AJ . Eric. -- You received this message because you are subscribed to the Google Groups sage-devel group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-devel+unsubscr...@googlegroups.com. To post to this group, send email to sage-devel@googlegroups.com. Visit this group at http://groups.google.com/group/sage-devel. For more options, visit https://groups.google.com/d/optout.
[sage-devel] 1000*pi Infinity is false
See subject. Any advice on getting around this? (or fixing it, since I can do that, too) -- You received this message because you are subscribed to the Google Groups sage-devel group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-devel+unsubscr...@googlegroups.com. To post to this group, send email to sage-devel@googlegroups.com. Visit this group at http://groups.google.com/group/sage-devel. For more options, visit https://groups.google.com/d/optout.
[sage-devel] Re: 1000*pi Infinity is false
This is http://trac.sagemath.org/ticket/12967 On Wednesday, April 1, 2015 at 5:38:18 PM UTC+2, john_perry_usm wrote: See subject. Any advice on getting around this? (or fixing it, since I can do that, too) -- You received this message because you are subscribed to the Google Groups sage-devel group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-devel+unsubscr...@googlegroups.com. To post to this group, send email to sage-devel@googlegroups.com. Visit this group at http://groups.google.com/group/sage-devel. For more options, visit https://groups.google.com/d/optout.
Re: [sage-devel] Sage logo -- Proposal
Hi, On Sun, Mar 29, 2015 at 08:23:53AM -0700, jplab wrote: Lately, I was suggested to create a post concerning the Sage logo. It would be nice to have an open discussion about some possibilities. Perhaps this is a good place to do so. I hope the discussion will be constructive. Indeed, one may ask the reason why bother?, why change the logo?. This is indeed a relevant question to ask. Perhaps this thread could gather ideas about the sage logo and opinions about it? I believe it seems to some users and developers that the logo is something that looks like an icosahedron. Is that the case in the origin? If so, I used sage and tikz to produce a similar picture which is an actual faithful drawing of an icosahedron. (I join the picture and the code to this post). I kind of like the picture and it was produced using Sage (and tikz)! A self-made logo is cool also I would say? Could this be used to produce a logo for sage? Personal opinion: I find the logo proposed by Jean-Philippe a very nice improvement on the the previous icosahedron-but-not-quite; my brain is at peace trying to reverse engineer what it is! So I vote for upgrading. Cheers, Nicolas -- Nicolas M. Thiéry Isil nthi...@users.sf.net http://Nicolas.Thiery.name/ -- You received this message because you are subscribed to the Google Groups sage-devel group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-devel+unsubscr...@googlegroups.com. To post to this group, send email to sage-devel@googlegroups.com. Visit this group at http://groups.google.com/group/sage-devel. For more options, visit https://groups.google.com/d/optout.
Re: [sage-devel] For french readers
On Wed, Apr 1, 2015 at 7:28 PM, Nicolas M. Thiery nicolas.thi...@u-psud.fr wrote: On Tue, Mar 31, 2015 at 06:18:22AM -0700, William Stein wrote: This sort of careful strategic iterative development, which easily parallelizes to a large number of people and gets big projects (GAP, Singular, PARI) to work together, rather than compete, is not amateuristic -- it's very sensible. Of course, often I feel I'm the only person in the world who believes this; maybe that's why there wasn't a Sage before Sage. I can testify of at least another person believing in this :-) Probably many more. When we had our Open source Computer Algebra Meeting back in 2002, A few years later, I think Paul Zimmerman gave me a bunch of notes from that meeting (I wasn't there, of course).When I read them I definitely felt like some people were thinking along the same lines as me. the above ideas where very much in the air. I believe that what was missing is someone with the determination, qualification, and stamina to get it running -- with a fairly insane guts level to think «yes we can». I only remember feeling insane when getting this thing going. I was convinced for the first two years that it would be a complete failure, but just kept doing it anyways... Cheers, Nicolas -- Nicolas M. Thiéry Isil nthi...@users.sf.net http://Nicolas.Thiery.name/ -- You received this message because you are subscribed to the Google Groups sage-devel group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-devel+unsubscr...@googlegroups.com. To post to this group, send email to sage-devel@googlegroups.com. Visit this group at http://groups.google.com/group/sage-devel. For more options, visit https://groups.google.com/d/optout. -- William (http://wstein.org) -- You received this message because you are subscribed to the Google Groups sage-devel group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-devel+unsubscr...@googlegroups.com. To post to this group, send email to sage-devel@googlegroups.com. Visit this group at http://groups.google.com/group/sage-devel. For more options, visit https://groups.google.com/d/optout.
[sage-devel] Using new display hooks
Hello,
I am working on adjusting SageMathCell to Volker's display system and have
a few questions mostly for him, but perhaps of interest to others as well:
1) What exactly is the point of display_immediately and when is it supposed
to be called? The default displayhook calls display_immediately. The
IPython notebook conversely calls displayhook from display_immediately
defined in the common base class, while the command line overrides it with
a different call to displayhook. (In which case the common version should
be moved to the notebook class.)
2) Calling data field differently in each output container is
inconvenient, since similar containers cannot be handled together, rather
one should copy-paste the same code again and again. I would much prefer
writing
{{{
elif isinstance(rich_output, (OutputImagePng, OutputImagePng, ...)):
msg = self.launch_viewer(
rich_output.data.filename(), plain_text.text.get())
return ({u'text/plain': msg}, {})
}}}
rather than
{{{
elif isinstance(rich_output, OutputImagePng):
msg = self.launch_viewer(
rich_output.png.filename(ext='png'), plain_text.text.get())
return ({u'text/plain': msg}, {})
elif isinstance(rich_output, OutputImageGif):
msg = self.launch_viewer(
rich_output.gif.filename(ext='gif'), plain_text.text.get())
return ({u'text/plain': msg}, {})
...
}}}
Note that the current/second variant requires replacing Png with Gif in 3
different places and different cases. (The first one would require
implementing default extension mechanism.)
3) html(string) should render string as a piece of HTML code rather
than just printing it if frontend supports it - I am not clear on how to
implement it in the current model, it seems to me that OutputHTML format
should be added and supported.
4) show(x^2) and view(x^2) should trigger display of OutputLatex, but it
does not seem to be the case - it seems to me that SageNB still relies on
old mess and IPython supports only global preferences for displaying
formulas.
5) Just to confirm - only SageNB depends now on EMBEDDED_MODE == True
blocks, correct?
Thank you!
Andrey
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[sage-devel] Re: Using new display hooks
On Wednesday, 1 April 2015 18:11:10 UTC-6, Volker Braun wrote: The IPython backend implementation is peculiar, you probably shouldn't look at it for guidance. The reason is that IPython expects a callable that returns a particular dictionary. In other words the displayhook doesn't actually show anything, it only converts the output into IPython's format. If we were to use remote IPython kernels for the commandline or something like that (which is currently discouraged afaik, but might work in the future) then it should probably use BackendIPython.display_immediately and not the override from the BackendIPythonCommandline subclass. At least that was my thought in the code layout. Well, SageMathCell does use IPython for processing and I definitely want to be as close to other interfaces as possible. My understanding is that all interfaces but SageNB rely on IPython at the moment, so having some common base class is of interest. 3) html(string) should render string as a piece of HTML code rather than just printing it if frontend supports it - I am not clear on how to implement it in the current model, it seems to me that OutputHTML format should be added and supported. Agree, though I haven't gotten there yet. 4) show(x^2) and view(x^2) should trigger display of OutputLatex, but it does not seem to be the case - it seems to me that SageNB still relies on old mess and IPython supports only global preferences for displaying formulas. There is also pretty_print(x^2), which will become synonymous with show in http://trac.sagemath.org/ticket/17821 I really dislike the view function, it really should be called pdflatex because that is what it does and how it is documented. The current name is very ambiguous, you basically have no chance to guess what it does. OK, to summarize, we want 3 different print statements that display results immediately: 1) print(s) that prints raw string and works fine at the moment 2) html(s) that interprets s as HTML code and requires new output type 3) something(s) that interprets s as LaTeX code for math mode, probably inserting HTML for MathJax and perhaps having versions for inline or display styles. The most messed up case for the moment. The natural choice for 3) seems to be latex, except that it does a different thing. And not so natural names that work at the moment are show, pretty_print, and view. Is the plan to stick with pretty_print for formulas, use show for plots only, and deprecate view? We also can add a function mathjax(s) that will work like html(latex(s) + appropriate decoration), although that would be a hard-to-discover function, probably... Thank you! Andrey -- You received this message because you are subscribed to the Google Groups sage-devel group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-devel+unsubscr...@googlegroups.com. To post to this group, send email to sage-devel@googlegroups.com. Visit this group at http://groups.google.com/group/sage-devel. For more options, visit https://groups.google.com/d/optout.
Re: [sage-devel] For french readers
On Tue, Mar 31, 2015 at 06:18:22AM -0700, William Stein wrote: This sort of careful strategic iterative development, which easily parallelizes to a large number of people and gets big projects (GAP, Singular, PARI) to work together, rather than compete, is not amateuristic -- it's very sensible. Of course, often I feel I'm the only person in the world who believes this; maybe that's why there wasn't a Sage before Sage. I can testify of at least another person believing in this :-) Probably many more. When we had our Open source Computer Algebra Meeting back in 2002, the above ideas where very much in the air. I believe that what was missing is someone with the determination, qualification, and stamina to get it running -- with a fairly insane guts level to think «yes we can». Cheers, Nicolas -- Nicolas M. Thiéry Isil nthi...@users.sf.net http://Nicolas.Thiery.name/ -- You received this message because you are subscribed to the Google Groups sage-devel group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-devel+unsubscr...@googlegroups.com. To post to this group, send email to sage-devel@googlegroups.com. Visit this group at http://groups.google.com/group/sage-devel. For more options, visit https://groups.google.com/d/optout.
[sage-devel] sage and jupyterhub for classroom teaching
It appears that sagenb is in maintenance-only, and that for graphical interface, the IPython notebook is the way forward. The IPython notebook looks wonderful and will probably be a very able replacement for single-user scenarios, but it lacks the multiuser capability that sagenb provides. I noticed that IPython notebook is now Jupyter, and that there *IS* a multiuser offshoot for that now: Jupyterhub. Does anyone here have experience deploying Jupyterhub and/or using it to interface with sage? It looks like a very attractive option for cases where SageMathCloud isn't appropriate. The blog post here: https://developer.rackspace.com/blog/deploying-jupyterhub-for-education/ looks promising as far as how mature Jupyterhub is, but I have no idea how it would work with sage. Comments and insights welcome! Nils -- You received this message because you are subscribed to the Google Groups sage-devel group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-devel+unsubscr...@googlegroups.com. To post to this group, send email to sage-devel@googlegroups.com. Visit this group at http://groups.google.com/group/sage-devel. For more options, visit https://groups.google.com/d/optout.
Re: [sage-devel] sage and jupyterhub for classroom teaching
On Wed, Apr 1, 2015 at 9:21 PM, Nils Bruin nbr...@sfu.ca wrote: It appears that sagenb is in maintenance-only, and that for graphical interface, the IPython notebook is the way forward. The IPython notebook looks wonderful and will probably be a very able replacement for single-user scenarios, but it lacks the multiuser capability that sagenb provides. I noticed that IPython notebook is now Jupyter, and that there *IS* a multiuser offshoot for that now: Jupyterhub. Does anyone here have experience deploying Jupyterhub and/or using it to interface with sage? It looks like a very attractive option for cases where SageMathCloud isn't appropriate. The blog post here: https://developer.rackspace.com/blog/deploying-jupyterhub-for-education/ looks promising as far as how mature Jupyterhub is, but I have no idea how it would work with sage. Comments and insights welcome! Jupyterhub (JH) and SageMathCloud (SMC) are basically approaching the same problem but from somewhat different directions. The following comparisons are difficult to write and probably wrong; they might be hard to write for the JH people, since they probably barely understand SMC, and for me since I surely barely understand JH. So take all this with a huge grain of salt, as it is probably more a reflection of my own ignorance than anything else. That said, I had some long conversations with Fernando Perez and some other JH devs in Berkeley a few months ago, and he helped me get a sense of what's going on. - JH has a bit more funding and resources right now than SMC -- they have several fulltime people, significant funds from Moore/Sloane, etc. SMC is 99.9% me in my spare time... - JH is (probably) all BSD licensed, where SMC is GPLv3. (SMC is GPLv3 because of the data management plans in several of my NSF grants, which were written more around Sage, but still apply.) - SMC is -- more or less -- only designed to run multi-data center on a large number of computers, and there's no automatic process to just get a copy of SMC up and running. Also, SMC requires constant human monitoring and maintenance. - JH is written in Python as much as is reasonably possible, whereas SMC is mostly written in CoffeeScript. - Both SMC and JH have target audiences that include large undergraduate courses with students using Python and other languages. - JH's money model is a Moore/Sloane grant, along with industry partnerships; this combination is the main plan for longterm funding, and it will probably work at a small scale at least, since Fernando et al. are very effective at grantsmanship. The JH devs explicitly decided not to go the route of starting a for-profit company.In contrast, SMC's money model is a for-profit company (SageMath, Inc.), with investment and a (yet to be revealed) business model, etc.; there's no evidence that I'm any good at this approach to funding what we're doing, but this approach definitely has the potential to scale up substantially in size. - Realtime collaboration is central in the design of everything in SMC, and of a lot of things I haven't implemented yet, but have laid the foundations for. JH has very limited collaborative capabilities (e.g., the coLaboratory stuff from Google), but of course much is planned. I hope that they are an order of magnitude better at implementing that stuff than me, since it is frickin' hard. - IPython is a heavily used and central part of SMC. Sage worksheets in SMC are much different than IPython notebooks (which are very similar to sagenb notebooks), and I view the two as complementary. If somebody from JH decides to explain how every point above is slightly wrong, that would be nice, since I can't imagine that they aren't wrong! -- William Nils -- You received this message because you are subscribed to the Google Groups sage-devel group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-devel+unsubscr...@googlegroups.com. To post to this group, send email to sage-devel@googlegroups.com. Visit this group at http://groups.google.com/group/sage-devel. For more options, visit https://groups.google.com/d/optout. -- William (http://wstein.org) -- You received this message because you are subscribed to the Google Groups sage-devel group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-devel+unsubscr...@googlegroups.com. To post to this group, send email to sage-devel@googlegroups.com. Visit this group at http://groups.google.com/group/sage-devel. For more options, visit https://groups.google.com/d/optout.
[sage-devel] Re: Using new display hooks
On Thursday, April 2, 2015 at 1:28:12 AM UTC+2, Andrey Novoseltsev wrote: 1) What exactly is the point of display_immediately and when is it supposed to be called? The default displayhook calls display_immediately. The IPython notebook conversely calls displayhook from display_immediately defined in the common base class, while the command line overrides it with a different call to displayhook. (In which case the common version should be moved to the notebook class.) There are two different output modes that each backend (=UI implementation) is supposed to provide * display_immediately: Shows something immediately, without waiting for the prompt. For example, this is how print works in plain Python. This is also how show() is supposed to work in Sage. So you can do sage: for g in compute_graph_list(): :g.do_something() :g.show()# shows each plot while the loop is still running :g.do_something_else() * displayhook: This shows the value of the last statement. It is only called after the evaluation of the current input cell / commandline is finished. So you get sage: plot(sin) # value of statement = a graphics object. Will be shown by the displayhook vs. sage: _ = plot(sin) # value of assignment is None, displayhook(None) does nothing The IPython backend implementation is peculiar, you probably shouldn't look at it for guidance. The reason is that IPython expects a callable that returns a particular dictionary. In other words the displayhook doesn't actually show anything, it only converts the output into IPython's format. If we were to use remote IPython kernels for the commandline or something like that (which is currently discouraged afaik, but might work in the future) then it should probably use BackendIPython.display_immediately and not the override from the BackendIPythonCommandline subclass. At least that was my thought in the code layout. 2) Calling data field differently in each output container is inconvenient, since similar containers cannot be handled together There is no assumption made that the rich output always consists of just one file, e.g. jmol rich output consists of multiple files / buffers. Usually you also have to treat the output differently. Your example only works because your backend is second-guessing what the output is, and/or using filesystem information to store the output type. IMHO that is a bad design choice of the backend. And then there are ambiguous extensions like jpg vs jpeg etc. A fundamental design choice of the rich output is that everything can be passed via in-memory buffers, without using the file system or a filename. There are convenience methods to save it to a file, but those are mainly for SageNB support. 3) html(string) should render string as a piece of HTML code rather than just printing it if frontend supports it - I am not clear on how to implement it in the current model, it seems to me that OutputHTML format should be added and supported. Agree, though I haven't gotten there yet. 4) show(x^2) and view(x^2) should trigger display of OutputLatex, but it does not seem to be the case - it seems to me that SageNB still relies on old mess and IPython supports only global preferences for displaying formulas. There is also pretty_print(x^2), which will become synonymous with show in http://trac.sagemath.org/ticket/17821 I really dislike the view function, it really should be called pdflatex because that is what it does and how it is documented. The current name is very ambiguous, you basically have no chance to guess what it does. 5) Just to confirm - only SageNB depends now on EMBEDDED_MODE == True blocks, correct? Yes! -- You received this message because you are subscribed to the Google Groups sage-devel group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-devel+unsubscr...@googlegroups.com. To post to this group, send email to sage-devel@googlegroups.com. Visit this group at http://groups.google.com/group/sage-devel. For more options, visit https://groups.google.com/d/optout.
[sage-devel] Re: Why inequalities are not converted to boolean?
[ From sage-support to sage-devel ] On Wed, 1 Apr 2015, Nils Bruin wrote: That was new to me. Why Sage can not raise exception? Yes, it could and perhaps it does sometimes. This would quickly extend to == and != as well, though, and most code expects A==B to return without an exception, so there raising an exception is problematic. First, a question: What python exactly does when saying if f(x): or if xy: ? Does it bool(f(x)) and bool(xy)? Mathematically I think that A equals B is maybe mostly used concept, but the meaning of it is not clear. A is isomorphic to B? Something else? Hence A==B is hard to define so that it will always make sense. But AB is usually not defined at all. -- Jori Mäntysalo
[sage-devel] Re: git currently unusable on trac?
Hi Travis, On 2015-04-01, Travis Scrimshaw tsc...@ucdavis.edu wrote: Hey Simon, You could just do git directly: git pull git push trac local_branch_name:remote_branch_name I can imagine that the problem was as follows: My local branch was pointing to a remote branch in u/SimonKing/..., but the ticket branch was in public/... Moreover, as I have found out later, I had *two* local branches related with my work on the ticket: The same diff, but with respect to different betas, and also with a different commit history. So, when trying to git trac push my local branch, then it was attempted to push A to a remote branch that was not registered as remote branch for the local branch, and that was git-history incompatible with what was attached to the ticket. I don't know which of the two reasons led to the error: The error message just said that something was wrong. What I eventually did: - Fetch the branch that was attached to the ticket - Rebase the two last commits of my local branch on top of FETCH_HEAD - push it to the public branch attached to the ticket, using the git command that you presented above. Note that the trouble/confusion would not have happened with mercurial, as the ostensible incompatibilities lie in the commit history and not in the actual diff. And of course the error message of git trac push could be more helpful. Best regards, Simon -- You received this message because you are subscribed to the Google Groups sage-devel group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-devel+unsubscr...@googlegroups.com. To post to this group, send email to sage-devel@googlegroups.com. Visit this group at http://groups.google.com/group/sage-devel. For more options, visit https://groups.google.com/d/optout.
[sage-devel] Re: git currently unusable on trac?
On Wednesday, April 1, 2015 at 7:01:05 PM UTC+2, Simon King wrote: Note that the trouble/confusion would not have happened with mercurial Since you can't rename branches in mercurial, typos stay forever ;-) Seriously, with git you can push any local branch to any remote branch. Just requires --force if the remote has an incompatible history. If you do not want to use the automatically guessed remote branch there is also git trac push --branch remote_branch_name. Might require --force just like the plain git version. -- You received this message because you are subscribed to the Google Groups sage-devel group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-devel+unsubscr...@googlegroups.com. To post to this group, send email to sage-devel@googlegroups.com. Visit this group at http://groups.google.com/group/sage-devel. For more options, visit https://groups.google.com/d/optout.
Re: [sage-devel] Re: [sage-support] Re: Why inequalities are not converted to boolean?
On 2015-04-01 22:27, William Stein wrote: Nils answered that it sort of was one, but the Python people realized it was a bad choice, and have moved away from it. To be more precise: Python 2 has two independent ways of doing comparison: there is __cmp__ on the one hand and __eq__, __lt__ and so on on the other hand (the latter are grouped as __richcmp__ in Cython). When sorting, __cmp__ is used but when the user types x y, then __lt__ is used. I think it is only __cmp__ which is not allowed to raise exceptions. With the other comparisons, you can do what you want. These comparisons are all independent, there is no requirement of consistency between different comparison operators. Good night, Jeroen. -- You received this message because you are subscribed to the Google Groups sage-devel group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-devel+unsubscr...@googlegroups.com. To post to this group, send email to sage-devel@googlegroups.com. Visit this group at http://groups.google.com/group/sage-devel. For more options, visit https://groups.google.com/d/optout.
[sage-devel] Re: 1000*pi Infinity is false
Thanks to everyone for the heads up. Glad to know it's being worked on. On Wednesday, April 1, 2015 at 10:52:01 AM UTC-5, Eric Gourgoulhon wrote: Hi, Already bool( pi Infinity) returns False. See the discussion in this thread https://groups.google.com/d/msg/sage-devel/Oip2hzvjFZQ/suGGtwQum0AJ. Eric. -- You received this message because you are subscribed to the Google Groups sage-devel group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-devel+unsubscr...@googlegroups.com. To post to this group, send email to sage-devel@googlegroups.com. Visit this group at http://groups.google.com/group/sage-devel. For more options, visit https://groups.google.com/d/optout.
[sage-devel] Re: [sage-support] Re: Why inequalities are not converted to boolean?
On Wed, Apr 1, 2015 at 12:38 PM, Simon King simon.k...@uni-jena.de wrote: Hi William, On 2015-04-01, William Stein wst...@gmail.com wrote: That was new to me. Why Sage can not raise exception? Given the amount of confusion this causes I think we should discuss / consider changing this. That discussion should of course take place on sage-devel (not here), Move to sage-devel. but anyway: Is it a Python convention or a genuine SageMath convention that comparison shouldn't raise an exception? Nils answered that it sort of was one, but the Python people realized it was a bad choice, and have moved away from it. A few years ago I would have (and did) argue for this convention (not raising exceptions). However, we *constantly* get support emails from people confused by this. As it is a major point of confusion, I am totally backing away from my previous stance, and think we should seriously considering making a change. In the former case, we shouldn't change it. And how much code would break if comparison was to be allowed to raise exceptions? Best regards, Simon -- You received this message because you are subscribed to the Google Groups sage-support group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-support+unsubscr...@googlegroups.com. To post to this group, send email to sage-supp...@googlegroups.com. Visit this group at http://groups.google.com/group/sage-support. For more options, visit https://groups.google.com/d/optout. -- William (http://wstein.org) -- You received this message because you are subscribed to the Google Groups sage-devel group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-devel+unsubscr...@googlegroups.com. To post to this group, send email to sage-devel@googlegroups.com. Visit this group at http://groups.google.com/group/sage-devel. For more options, visit https://groups.google.com/d/optout.
