Re: [sage-devel] Checking out old branches

On 2016-11-18 08:12, David Roe wrote: If I checkout an old branch (say, from one or two versions of Sage ago), it essentially forces a rebuild of all of Sage, even if I think better of it and checkout develop immediately. What exactly do you mean with "even if I think better of it and checkout

Re: [sage-devel] Re: Checking out old branches

On 2016-11-18 20:48, Robert Bradshaw wrote: Hopefully with a good ccache/cycache rebuilding from a fresh clone should be fast too. Speaking of cycache, is there any chance that the following will be fixed some day? https://github.com/cython/cython/issues/1393 https://github.com/cython/cython

[sage-devel] Re: singular update and interreduced_basis

Le jeudi 17 novembre 2016 22:40:12 UTC+1, Dima Pasechnik a écrit : > > > git show 5b8343be > > Thank you for the link. For the moment I have summarized the problem in #21884, let's see jeroen thinks if it worth a new trac. best regards Frederic > Hopefully Jeroen (in cc) can explain this cha

Re: [sage-devel] Checking out old branches

I mean that even if I checkout develop again before building Sage, it still takes a long time. David On Sat, Nov 19, 2016 at 3:35 AM, Jeroen Demeyer wrote: > On 2016-11-18 08:12, David Roe wrote: > >> If I checkout an old branch (say, from one or two versions of Sage ago), >> it essentially forc

Re: [sage-devel] Checking out old branches

On 2016-11-19 11:23, David Roe wrote: I mean that even if I checkout develop again before building Sage, it still takes a long time. You mean something like - checkout old branch (but don't build it) - checkout new branch - build Sage That's a known issue, but it's certainly not Sage-specific

[sage-devel] Looking for a Sage Analog to Mathematica's Histogram3D

Hell

[sage-devel] Looking for a Sage Analog to Mathematica's Histogram3D Function

Hello, I'm plotting 2D histograms (3D plots) of 2D tuples of the form (gap1, gap2) with Mathematica's Histogram3D function. I'm currently writing the tuple data out to file with Sage / Python and then loading the data into a working Mathematica notebook so I can use Mathematica's Histogram3D a

[sage-devel] Re: Looking for a Sage Analog to Mathematica's Histogram3D

Please see the duplicate post of this question immediately above. On Saturday, November 19, 2016 at 9:35:18 AM UTC-6, Maxie Schmidt wrote: > > > > >

[sage-devel] Recurrences and Sequence Formula Guessing Functions in Sage

Hello, I have been working back and forth between Sage and Mathematica for a while now trying to learn how to use Sage to replace Mathematica's core functionality in my day to day use of it. One of the (sets of) functions haven't yet found a suitable open source alternative for is related to

[sage-devel] Re: Recurrences and Sequence Formula Guessing Functions in Sage

I'd be interested in what output you'd like to have. The hard part in the FriCAS package was to get decent speed, changing output should be relatively straightforward. (I guess that you are aware of the possibility of using the package from within sage) Martin Am Samstag, 19. November 2016 16

[sage-devel] Re: Recurrences and Sequence Formula Guessing Functions in Sage

I'm aware that the FriCAS package can be called from within Sage / Python, and I don't see any reason to rewrite what's already there, just extend it's current recognition capabilities and put a nice friendly wrapper function around all of these disparate routines. Something like find_sequence_

[sage-devel] Re: Recurrences and Sequence Formula Guessing Functions in Sage

Needless to say perhaps, but Maxima has some capabilities in this respect, not sure how much of it is exposed in Sage. E.g. ggf should be able to do rational generating functions: http://maxima.sourceforge.net/docs/manual/maxima_60.html#Item_003a-ggf And it does have things like Gosper and Zeilb

[sage-devel] Re: Recurrences and Sequence Formula Guessing Functions in Sage

On Saturday, November 19, 2016 at 4:56:42 PM UTC+1, Maxie Schmidt wrote: > > Hello, > > I have been working back and forth between Sage and Mathematica for a > while now trying to learn how to use Sage to replace Mathematica's core > functionality in my day to day use of it. One of the (sets o

Re: [sage-devel] Checking out old branches

On Sat, Nov 19, 2016 at 7:12 AM, Jeroen Demeyer wrote: > On 2016-11-19 11:23, David Roe wrote: > >> I mean that even if I checkout develop again before building Sage, it >> still takes a long time. >> > > You mean something like > > - checkout old branch (but don't build it) > - checkout new bran

Re: [sage-devel] Re: Recurrences and Sequence Formula Guessing Functions in Sage

Another thing that might be nice to tie in is the Online Encyclopedia of Integer Sequences. Or at least include a link in the documentation, though most people looking to guess a sequence will already be aware of OEIS. David On Sat, Nov 19, 2016 at 2:00 PM, Fredrik Johansson < fredrik.johans...@g

Re: [sage-devel] Re: Recurrences and Sequence Formula Guessing Functions in Sage

On Sat, Nov 19, 2016 at 02:31:42PM -0500, David Roe wrote: > Another thing that might be nice to tie in is the Online Encyclopedia of > Integer Sequences. Or at least include a link in the documentation, though > most people looking to guess a sequence will already be aware of OEIS. > David

[sage-devel] Re: Recurrences and Sequence Formula Guessing Functions in Sage

out off the box, the FriCAS package can do the following (described in some detail in https://arxiv.org/abs/math/0702086, the journal published a shortened version): 1) Generating functions: * rational (guessPade) * algebraic (guessAlg) * linear diffeq (guessHolo) * polynomial diffeq (guessADE)

[sage-devel] Re: Recurrences and Sequence Formula Guessing Functions in Sage

I forgot to add: once a diffeq for a generating function is found, the package can also give you the 1783-th coefficient of the generating function. And, most importantly: the main thing to do to make it really useful for sage, is to implement a better conversion from sage lists to fricas lists

Re: [sage-devel] Re: Recurrences and Sequence Formula Guessing Functions in Sage

On Sat, Nov 19, 2016 at 2:40 PM, Thierry wrote: > On Sat, Nov 19, 2016 at 02:31:42PM -0500, David Roe wrote: > > Another thing that might be nice to tie in is the Online Encyclopedia of > > Integer Sequences. Or at least include a link in the documentation, > though > > most people looking to gu

Re: [sage-devel] Re: Recurrences and Sequence Formula Guessing Functions in Sage

Thanks for all of the suggestions. I think I will start by getting all of Martin's package routines working under a single wrapper function and try to improve from there. I will definitely include options to search the OEIS database. The only thing I'm a little concerned about if this would ev

Re: [sage-devel] Re: Recurrences and Sequence Formula Guessing Functions in Sage

Am Samstag, 19. November 2016 21:23:10 UTC+1 schrieb Maxie Schmidt: > > Thanks for all of the suggestions. I think I will start by getting all of > Martin's package routines working under a single wrapper function and try > to improve from there. > I think that one question is how you want to r

Re: [sage-devel] Re: Recurrences and Sequence Formula Guessing Functions in Sage

On Saturday, November 19, 2016 at 8:23:10 PM UTC, Maxie Schmidt wrote: > > Thanks for all of the suggestions. I think I will start by getting all of > Martin's package routines working under a single wrapper function and try > to improve from there. I will definitely include options to search t

[sage-devel] Re: Recurrences and Sequence Formula Guessing Functions in Sage

> One of the (sets of) functions haven't yet found a suitable open source alternative > for is related to guessing formulas and generating functions for an input sequence > (as in Mathematica's FindSequenceFunction and FindGeneratingFunction). I am amazed that no one has yet mentioned Gfun, the

Re: [sage-devel] Checking out old branches

I've implemented a new git-trac command at https://github.com/sagemath/git-trac-command/pull/26. I ended up not using git worktree at all. Instead, the command creates a new branch from develop, and merges in the changes from the old branch. I know that there's been some discussion that merging

[sage-devel] Re: Recurrences and Sequence Formula Guessing Functions in Sage

1. Sage can guess rational generating functions and provide formulae for experimental math: sage: C. = CFiniteSequences(QQ) sage: C.guess([1,3,5,7,9,11,13]) C-finite sequence, generated by (x + 1)/(x^2 - 2*x + 1) sage: _.closed_form() 2*n + 1 sage: C.guess([0,1,1,2,3,5,8,13,21]).closed_form() 1/5

[sage-devel] Re: Recurrences and Sequence Formula Guessing Functions in Sage

Did anybody ever compare the possibilities speed-wise? The scope of these packages is quite different: ore_algebra is for the holonomic and q-holonomic universe, the guessing facility in fricas is for guessing only - but covers also polynomial recurrences and differential equations (and their q

[sage-devel] Re: Recurrences and Sequence Formula Guessing Functions in Sage

> > 2.As to guessing holonomic recurrences there is the Ore algebra package. > It would be nice to have a tutorial. > what's wrong with https://arxiv.org/abs/1306.4263 ? Martin -- You received this message because you are subscribed to the Google Groups "sage-devel" group. To unsubscribe fr