Re: [sympy] Re: Who can mentor for GSoC?

I am willing to participate as a mentor for SymEngine and any project regarding the Diophantine equation module in SymPy. Regards, Thilina On Tue, Feb 9, 2016 at 3:23 AM, Ondřej Čertík wrote: > On Mon, Feb 8, 2016 at 1:59 PM, Aaron Meurer wrote: >

Re: [sympy] Re: GSoC update for applications

This is great news !! Regards, Thilina On Thu, Mar 5, 2015 at 11:35 AM, AMiT Kumar dtu.a...@gmail.com wrote: On Thursday, March 5, 2015 at 11:19:46 AM UTC+5:30, Ondřej Čertík wrote: Hi AMiT, On Wed, Mar 4, 2015 at 10:43 PM, AMiT Kumar dtu@gmail.com wrote: Hi Ondrej, From the

Re: [sympy] Re: GSoC 2014 Diophantine equation

Hi Nguyen, Sorry I took a lot of time to get back to you. Please go through this article. http://thilinaatsympy.wordpress.com/2013/06/21/solving-linear-diophantine-equation/ I am not sure whether we can do the fallowing assumption when solving* 2x + 3y + 4z = 5*. Lets set x = x and assume y =

Re: [sympy] Re: [GSoC] Linear Algebra Module for CSymPy

Thanks Ondrej for the reply. Regards, Thilina On Wed, Mar 19, 2014 at 12:20 AM, Ondřej Čertík ondrej.cer...@gmail.comwrote: On Tue, Mar 18, 2014 at 10:18 AM, Thilina Rathnayake thilina.r...@gmail.com wrote: Hi, I took a look at the Numerical libraries we can use. Both FLINT and LELA

Re: [sympy] Re: [GSoC] Linear Algebra Module for CSymPy

which Ondrej pointed out earlier is released under BSD license and I guess it's compatible with MIT license. https://github.com/ContinuumIO/libdynd/blob/master/LICENSE.md Any suggestions regarding this? Regards, Thilina On Tue, Mar 18, 2014 at 7:06 AM, Thilina Rathnayake thilina.r

Re: [sympy] Re: [GSoC] Linear Algebra Module for CSymPy

structures. On Sunday, March 9, 2014 4:26:28 PM UTC+1, Thilina Rathnayake wrote: Hi All, I would like to work on implementing a Linear Algebra Module for CSymPy this summer as a GSoC project. I like to focus mainly on Matrices and related algorithms as they play a central role in Linear algebra

Re: [sympy] Re: GSoC 2014 Diophantine equation

On Mon, Mar 17, 2014 at 1:09 AM, Nguyen Tung iwonan...@gmail.com wrote: Hi, I've worked on the first issue you gave me: diophantine(x**3-4*x*y**2+y**3-1) I've found a bug in your classify_diop() that yields an error. In line 322, you put a '==' which should be '='. Bu Yes that shoul be

Re: [sympy] Re: GSoC 2014 Diophantine equation

On Mon, Mar 17, 2014 at 8:37 PM, Nguyen Tung iwonan...@gmail.com wrote: And another question, I've read the paper you gave me containing the algorithm that we want to implement. However, I think I don't really get the idea (notations, methods ...). Is there any chance I can still implement

Re: [sympy] Re: [GSoC] Linear Algebra Module for CSymPy

Thank Ondrej for the reply. Yes, it seems like the we'll have to go back to the original proposal Regards, Thilina On Tue, Mar 18, 2014 at 5:05 AM, Ondřej Čertík ondrej.cer...@gmail.comwrote: On Mon, Mar 17, 2014 at 9:40 AM, Thilina Rathnayake thilina.r...@gmail.com wrote: Hi All

Re: [sympy] Re: GSoC 2014 Diophantine equation

On Tue, Mar 18, 2014 at 1:23 AM, Nguyen Tung iwonan...@gmail.com wrote: Hi, Do we really need a complete re-implementation? If some areas (like Thue equations) haven't been implemented, we'll work on those only. We only need to re-implement the solutions for linear diophantine equations.

Re: [sympy] Re: GSoC 2014 Diophantine equation

Hi, You mean the areas we need to improve? I noted some of the areas we need to improve in my first reply to you. Please have a look at that. Let me know if you have any problems with that. Regards, Thilina On Sun, Mar 16, 2014 at 2:37 PM, Nguyen Tung iwonan...@gmail.com wrote: Hello, In

Re: [sympy] Re: GSoC 2014 Diophantine equation

equations should be degree of one) I was so confusing. Please be more specific Thank you On Sunday, March 16, 2014 11:14:24 AM UTC+2, Thilina Rathnayake wrote: Hi, You mean the areas we need to improve? I noted some of the areas we need to improve in my first reply to you. Please have a look

Re: [sympy] Re: GSOC- 2014 : On PDE and Diophantine Equations

Hi, Nice to hear that you are working in fixing the issues. Did you find good references for the algorithms involved? I am eager to know how much of work you have done on this. Regards, Thilina On Sun, Mar 16, 2014 at 4:23 PM, Kumar Krishna Agarwal kumar.1994...@gmail.com wrote: Hi all,

Re: [sympy] Re: GSoC 2014 Diophantine equation

Hi, Below is the link for `factor_list()` documentation. http://docs.sympy.org/latest/modules/polys/reference.html?highlight=factor_list#sympy.polys.polytools.Poly.factor_list You can find documentation on functions, classes and Modules in online sympy documentation.

Re: [sympy] [GSoC] Linear Algebra Module for CSymPy

Hi, I don't see any problem in using other good packages with CSymPy. That is why I said that if the user is willing to install other libraries we should allow it. This might provide very fast and efficient functionalities. But what if one of the packages we use is discontinued for some reason?

Re: [sympy] [GSoC] Linear Algebra Module for CSymPy

Thank you Ondrej and Tim for your inputs. I too think we should concentrate on Symbolic matrix manipulation rather than the numerical matrices since there are good libraries we can use to do them. The approach used in Armadillo is that if the user is willing to install additional libraries it

Re: [sympy] GSoC 2014 Diophantine equation

Hi Nguyen, We need to improve the solutions for linear Diophantine equations as the current implementation doesn't give you the complete set of solutions. I made the following PR recently to correct this. https://github.com/sympy/sympy/pull/7241 Also you can take a look at the two open issues

Re: [sympy] [GSoC] CSymPy

Hi Vincent, As I have pointed out earlier one of the design goals of CSymPy is to work without dependencies. Currently, only compulsory dependency for CSymPy is the gmp library. Ondrej might able to explain this more. Regards, Thilina On Wed, Mar 12, 2014 at 6:26 AM, Vinzent Steinberg

[sympy] [GSoC] Linear Algebra Module for CSymPy

Hi All, I would like to work on implementing a Linear Algebra Module for CSymPy this summer as a GSoC project. I like to focus mainly on Matrices and related algorithms as they play a central role in Linear algebra. I hope to implement following (rough) list of things related to matrices: 1.

Re: [sympy] [GSoC] Linear Algebra Module for CSymPy

Hi, Thanks for the links. I'll have a look at them. I didn't even know they existed. Eigen is even used by Google. That's really interesting. Regards, Thilina On Sun, Mar 9, 2014 at 9:50 PM, someone someb...@bluewin.ch wrote: Hi, Apart from SymPy matrices module, there are open source

Re: [sympy] Re: [GSoC] Linear Algebra Module for CSymPy

:26:28 PM UTC+1, Thilina Rathnayake wrote: Hi All, I would like to work on implementing a Linear Algebra Module for CSymPy this summer as a GSoC project. I like to focus mainly on Matrices and related algorithms as they play a central role in Linear algebra. I hope to implement following

Re: [sympy] Re: [GSoC] Linear Algebra Module for CSymPy

I am not sure BLAS or LAPACK supports arbitrary precision arithmetic. If not we have to go with FLINT. Regards, Thilina On Mon, Mar 10, 2014 at 8:51 AM, Thilina Rathnayake thilina.r...@gmail.comwrote: Hi Mario, Thanks for the reply. One of the design goals of CSymPy is that user should

[sympy] [GSoC] CSymPy

Hi All, I wish to apply for in this year's GSoC as well and I am interested in doing a project with CSymPy. I worked with Ondrej on implementing basic number theoretic functionalities for CSymPy during the last few months. Below are some PRs related to above work.

Re: [sympy] [GSoC] CSymPy

Thanks for the reply Ondrej. On Thu, Mar 6, 2014 at 5:46 AM, Ondřej Čertík ondrej.cer...@gmail.comwrote: On Wed, Mar 5, 2014 at 4:25 PM, Thilina Rathnayake thilina.r...@gmail.com wrote: Hi All, I wish to apply for in this year's GSoC as well and I am interested in doing a project

[sympy] Happy Holidays !!!!!

Wish you all a merry Christmas and Happy Holidays Regards, Thilina. -- You received this message because you are subscribed to the Google Groups sympy group. To unsubscribe from this group and stop receiving emails from it, send an email to sympy+unsubscr...@googlegroups.com. To post to

Re: [sympy] SciPy India 2013 tutorial

Great Job Ondrej !!! I wish we had something like that back here in Sri Lanka. Regards, Thilina On Wed, Dec 18, 2013 at 7:33 PM, Jason Moore moorepa...@gmail.com wrote: Nice! How was the SciPy culture in India? Jason moorepants.info +01 530-601-9791 On Wed, Dec 18, 2013 at 1:20 AM,

Re: [sympy] Re: Proposal : Diophantine equation module

is a bit complex. On Wednesday, November 27, 2013 8:37:28 AM UTC-8, Thilina Rathnayake wrote: Hi All, I want to change the basic organization of Diophantine equation module so that it can be extended and used more conveniently. Since I wish to develop the module for CSymPy also, I thought

Re: [sympy] GSOC- 2014 : On PDE and Diophantine Equations

On Sat, Dec 14, 2013 at 6:54 PM, Kumar Krishna Agarwal kumar.1994...@gmail.com wrote: Hi all, I am Kumar Krishna Agarwal. I am presently a second year student, pursuing my majors in Mathematics and Computing at IIT Kharagpur. Having followed the development for quite sometime, I would like

Re: [sympy] Re: SymPy 0.7.4 is released

Kirpichev Stefan Krastanov Manoj Kumar Ronan Lamy Oliver Lee David Li Stephen Loo Aaron Meurer Jason Moore Rick Muller* Markus Müller* Mateusz Paprocki Mario Pernici Pablo Puente* QuaBoo* Thilina Rathnayake Vinit Ravishankar* Timothy Reluga Julien Rioux Matthew

[sympy] Proposal : Diophantine equation module

Hi All, I want to change the basic organization of Diophantine equation module so that it can be extended and used more conveniently. Since I wish to develop the module for CSymPy also, I thought this would be a good time to talk about this. Currently, the Diophantine module is invoked through

[sympy] Re: GSoC Conclusion

Thank you for the update Aaron. Regards, Thilina On Tue, Oct 1, 2013 at 6:18 AM, Aaron Meurer asmeu...@gmail.com wrote: The Google Summer of Code program has officially ended, and I'm happy to announce that all seven of our students have passed. This hopefully doesn't mean the end of their

Re: [sympy] ANN: CSymPy, fast symbolic manipulation library, written in C++

Congratulations Ondrej on your awesome work I wanted to actively take part in it but I got stuck with the GSoC project and my college work. I hope to engage more with this project in the future. This is especially helpful when solving equations like Thue equations because the speed is

[sympy] Diophantine Module Introduction

Hi Ondrej, I completed a tutorial style introduction for the Diophantine module. Please take a look at it when you have some free time. Here is the PR. https://github.com/sympy/sympy/pull/2479 Regards, Thilina -- You received this message because you are subscribed to the Google Groups sympy

Re: [sympy] ANN: CSymPy, fast symbolic manipulation library, written in C++

in the process. Regards, Thilina. On Tue, Sep 24, 2013 at 12:32 AM, Ondřej Čertík ondrej.cer...@gmail.comwrote: Thilina, On Mon, Sep 23, 2013 at 12:14 PM, Thilina Rathnayake thilina.r...@gmail.com wrote: Congratulations Ondrej on your awesome work I wanted to actively take part

Re: [sympy] ANN: CSymPy, fast symbolic manipulation library, written in C++

Thanks for the update. Regards, Thilina On Tue, Sep 24, 2013 at 1:50 AM, Ondřej Čertík ondrej.cer...@gmail.comwrote: On Mon, Sep 23, 2013 at 2:15 PM, Thilina Rathnayake thilina.r...@gmail.com wrote: Thank you for the reply Ondrej. I will be more than happy to implement those

Re: [sympy] Re: Pattern matching

match4(t) [(1, {z: 2, y: 2}), (-2, {x: 1, z: 2, y: 1}), (1, {x: 2, z: 2}), (-2, {x: 1, z: 1, y: 2}), (-2, {x: 2, z: 1, y: 1}), (1, {x: 2, y: 2})] On Sunday, September 15, 2013 8:13:29 PM UTC+2, Thilina Rathnayake wrote: Hi All, Addressing issue 4004, the equation after

[sympy] Pattern matching

Hi All, Addressing issue 4004https://code.google.com/p/sympy/issues/detail?id=4004, the equation after expanding can be written as below, In [1]: t = (x*y + y*z + x*z)**2 - 4*x*y*z*(x + y + z) In [2]: expand(t) Out[2]: 2 2 22 2222 2 x ⋅y - 2⋅x ⋅y⋅z

Re: [sympy] Algebraic Number theory Module for SymPy

Hi David, No, I haven't used it. Thanks for pointing that out, I'll have a look at it. Regards, Thilina On Sat, Sep 14, 2013 at 4:25 PM, David Joyner wdjoy...@gmail.com wrote: On Sat, Sep 14, 2013 at 4:42 AM, Thilina Rathnayake thilina.r...@gmail.com wrote: Hi Ondrej, In the past few

[sympy] Fundamental unit calculations and Solving norm equations

Hi All, Is there a module in SymPy which can be used to calculate fundamental units in a number field and to solve the norm equation? Thanks in advance. Regards, Thilina -- You received this message because you are subscribed to the Google Groups sympy group. To unsubscribe from this group

[sympy] Finding whether a number is real

Hi All, I am trying to implement the solutions for cubic Thue equation and to do that I have to solve cubic equations. I use `solve()` to do this. But I am having a little trouble filtering out real solutions from the solution list returned by `solve()`. I tried the following. In [5]: from

Re: [sympy] Re: Finding whether a number is real

= solve(2*x**3 - 3*x**2 - 3*x - 1) solutions[1].n() 2.26116669667966 - 0.e-23*I solutions = [s.expand(complex=True) for s in solutions] solutions[1] 1/2 + 3**(1/3)/2 + 3**(2/3)/2 On Wednesday, September 11, 2013 12:36:56 PM UTC+2, Thilina Rathnayake wrote: Hi All, I am trying to implement

[sympy] Status of the Diophantine Equation

Hi Ondrej, I implemented solutions to the general sum of squares. That is to the equations of the form x_1**2 + x_2**2 + . . . + x_n**2 = k. I made a commit. Please take a look at the following PR. The new function is named `diop_general_sum_of_squares()` and it's hooked to `diop_solve()` and

Re: [sympy] Product of a custom Function

Hi Yaser, I can't get it compiled since the statement is not defined. Can you include few more lines of code so that it compiles? And what is ``k`` here? Is it a number or a symbol? Regards, Thilina. On Mon, Sep 9, 2013 at 10:02 PM, Mahmoud Yaser me.mahmoudya...@gmail.comwrote: I am

Re: [sympy] History of Sympy

Hi, See if these links can help. http://docs.sympy.org/0.7.3/aboutus.html http://ondrejcertik.blogspot.com/ Regards, Thilina On Sun, Sep 8, 2013 at 1:50 PM, Christophe Bal projet...@gmail.com wrote: Hello, is there a little history of the birth and the evolution of Sympy ? I'm

Re: [sympy] Travis stopped showing the commit statuses

Hi Ondrej, I have encountered this also. Most of my commits do not show their test status. Regards, Thilina On Fri, Sep 6, 2013 at 10:21 PM, Ondřej Čertík ondrej.cer...@gmail.comwrote: Hi, I noticed many times by now, that for some PRs, Travis does not report the results (but it still

Re: [sympy] Re: Diophantine Equation Module

to reduce the problem to a sequence of simpler problems. I created issues for equation that can't be solved yet: http://code.google.com/p/sympy/issues/list?q=label:Diophantine otherwise I didn't find any bugs so far. Ondrej On Fri, Aug 30, 2013 at 11:29 AM, Thilina Rathnayake thilina.r

Re: [sympy] Re: Diophantine Equation Module

And I will try to find how I can implement solving systems of Diophantine equations. If we run out of time for that, I can do it after the deadline. It's a nice addition to the module. Regards, Thilina On Fri, Sep 6, 2013 at 8:52 AM, Thilina Rathnayake thilina.r...@gmail.comwrote: Hi Ondrej

Re: [sympy] Test Failure

Thanks ondrej, I will make a pull request improving docs. Regards, Thilina On Tue, Sep 3, 2013 at 11:06 AM, Ondřej Čertík ondrej.cer...@gmail.comwrote: On Mon, Sep 2, 2013 at 10:02 AM, Thilina Rathnayake thilina.r...@gmail.com wrote: Hi Ondrej, I made a commit. Please take a look

Re: [sympy] Test Failure

siolution diop_solve(x**2 - 2) [-sqrt(2), sqrt(2)] On Tuesday, September 3, 2013 10:20:04 AM UTC+2, Thilina Rathnayake wrote: Thanks ondrej, I will make a pull request improving docs. Regards, Thilina On Tue, Sep 3, 2013 at 11:06 AM, Ondřej Čertík ondrej...@gmail.comwrote: On Mon

[sympy] Testing the coverage

Hi All, Currently, I can generate the coverage report by doing, ./bin/coverage_report.py This runs all the tests and generate coverage report for every module. Is there a way to find the coverage of a single module by running only the tests related to it? Thanks in advance. Regards,

Re: [sympy] Test Failure

that you won't use. Aaron Meurer On Sep 3, 2013, at 11:14 AM, Thilina Rathnayake thilina.r...@gmail.com wrote: In case of a uni-variable equation, I just passed the equation to `solve()`. I forgot to check whether the results were integers. I'll fix it. Thank you for the information. Regards

Re: [sympy] Test Failure

On Mon, Sep 2, 2013 at 7:26 AM, Ondřej Čertík ondrej.cer...@gmail.comwrote: On Sun, Sep 1, 2013 at 8:07 AM, Thilina Rathnayake thilina.r...@gmail.com wrote: Hi All, Currently, this PR fails the travis build and sympy-bot tests. But when I run the tests locally, they all pass. I tried

Re: [sympy] Test Failure

, Thilina Rathnayake thilina.r...@gmail.comwrote: Hi Ondrej, For some reason, Travis hasn't put the result of the test in front of the commit. Only the last build can be seen using the link provided by `Details` under the PR's Description. Here is the link to my last build. https://travis

Re: [sympy] Test Failure

...@gmail.comwrote: On Mon, Sep 2, 2013 at 1:01 AM, Thilina Rathnayake thilina.r...@gmail.com wrote: Finally got to know of the bug which was causing the problem. Pernici has fixed it in #2430. After it gets merged, I can commit my changes again and merge my PR. Awesome! It's merged. Ondrej

[sympy] Re: Build document

Hi Stephen, I tried to build the docs, I got a different kind of an error. $ make html mkdir -p _build/i18n/ mkdir -p _build/html/tutorial true mkdir -p src/.static mkdir -p _build/html mkdir -p _build/doctrees mkdir -p src/modules PYTHONPATH=..: sphinx-build -b html -d _build/doctrees src

[sympy] Test Failure

Hi All, Currently, this PR https://github.com/sympy/sympy/pull/2303 fails the travis build and sympy-bot tests. But when I run the tests locally, they all pass. I tried testing in both python2 and python3, still the tests pass. I merged the branch with the current master and again ran the

Re: [sympy] Re: Build document

1, 2013, at 7:53 AM, Thilina Rathnayake thilina.r...@gmail.com wrote: Hi Stephen, I tried to build the docs, I got a different kind of an error. $ make html mkdir -p _build/i18n/ mkdir -p _build/html/tutorial true mkdir -p src/.static mkdir -p _build/html mkdir -p _build/doctrees

[sympy] Re: Diophantine Equation Module

ones). Aaron Meurer On Thu, Aug 29, 2013 at 7:57 PM, Aaron Meurer asmeu...@gmail.com wrote: On Thu, Aug 29, 2013 at 7:19 PM, Thilina Rathnayake thilina.r...@gmail.com wrote: Hi Everyone, I have completed most of my work related to Diophantine equation Module. It will be really

Re: [sympy] Re: Diophantine Equation Module

, On Wed, Aug 28, 2013 at 1:44 AM, Thilina Rathnayake thilina.r...@gmail.com wrote: Hi Ondrej, I finished the last two deliverables(generalized pythagorean equation and general sum of squares) of my project over the weekend and I think now the project is almost complete. But before

Re: [sympy] Re: Diophantine Equation Module

Hi Ondrej, BTW, Thank you very much for the links and the reviews. Regards, Thilina On Thu, Aug 29, 2013 at 12:12 PM, Thilina Rathnayake thilina.r...@gmail.com wrote: Hi Onderj, I hope to work on improving documentation during this week. I added some docstrings to the Sphinx

Re: [sympy] Re: Diophantine Equation Module

at 10:19 PM, Ondřej Čertík ondrej.cer...@gmail.comwrote: On Thu, Aug 29, 2013 at 12:42 AM, Thilina Rathnayake thilina.r...@gmail.com wrote: Hi Onderj, I hope to work on improving documentation during this week. I added some docstrings to the Sphinx but they need to be improved. Great

[sympy] Re: Diophantine Equation Module

]) works. This is more of a design issue than an implementation one. We need to figure out the right way to return parameterized solutions from solve(). Aaron Meurer On Wed, Aug 28, 2013 at 1:44 AM, Thilina Rathnayake thilina.r...@gmail.com wrote: Hi Ondrej, I finished the last two

[sympy] Diophantine Equation Module

Hi Ondrej, I finished the last two deliverables(generalized pythagorean equation and general sum of squares) of my project over the weekend and I think now the project is almost complete. But before pulling those new code we have to merge the current PR first. Below is it's link

Re: [sympy] isympy error

You only need to do the first command once per remote. The second command will download changes. The third command will checkout the remote branch locally. Aaron Meurer On Tue, Aug 20, 2013 at 2:04 AM, Thilina Rathnayake thilina.r...@gmail.com wrote: Hi All, I recently

Re: [sympy] isympy error

changes. The third command will checkout the remote branch locally. Aaron Meurer On Tue, Aug 20, 2013 at 2:04 AM, Thilina Rathnayake thilina.r...@gmail.com wrote: Hi All, I recently got a clone of Pernici's SymPy fork to review it. But when I tried, python ./bin/isympy inside

[sympy] isympy error

Hi All, I recently got a clone of Pernici's SymPy forkhttps://github.com/pernici/sympyto review it. But when I tried, python ./bin/isympy inside it, the following error occurred. Traceback (most recent call last): File ./bin/isympy, line 189, in module main() File

Re: [sympy] Re: isympy error

master branch, you may review in another branch. Thilina Rathnayake於 2013年8月20日星期二UTC+8下午4時04分07秒寫道： Hi All, I recently got a clone of Pernici's SymPy forkhttps://github.com/pernici/sympyto review it. But when I tried, python ./bin/isympy inside it, the following error occurred

Re: [sympy] Re: isympy error

Okay, I got it working. I had to create a new branch and had to pull from Pernici's original branch, fixed few merge conflicts and it's working. I guess this is what Stephen said, but I didn't understand it. Thanks again Stephen. On Tue, Aug 20, 2013 at 4:19 PM, Thilina Rathnayake thilina.r

[sympy] [GSoC] Diophantine Equation Module

Hi Ondrej, Finally, I am done with the improvements for the binary quadratic equations. I improved the documentation a bit. But still there are some work to be done. I'll work on improving them towards the end of this week. I'll submit it as a separate PR. When the Pernici's PR

[sympy] Re: sympy

...@gmail.comwrote: Hi Thilina, Thanks, I've merged it. Can you point me to the commit in your Diop. module? I'll have a look later tonight. Ondrej On Wed, Aug 14, 2013 at 3:00 PM, Thilina Rathnayake thilina.r...@gmail.com wrote: Hi Ondrej, I made a Pull request updating the README file. Please

[sympy] factor_list() in Python3

Hi All, Seems like there is a bug in factor_list() function in Python 3.2 and Python 3.3 For example, factor_list(y**2 + x*y) fail in Python 3 versions. Check the end of this Travis build report: https://travis-ci.org/sympy/sympy/jobs/10036342 I am currently using python 2.7.5 for my GSoC

Re: [sympy] factor_list() in Python3

using Python 3.2 Here is the link to the failed build: https://travis-ci.org/sympy/sympy/builds/10036334 Regards, Thilina On Sat, Aug 10, 2013 at 8:51 PM, Aaron Meurer asmeu...@gmail.com wrote: On Aug 10, 2013, at 8:25 AM, Thilina Rathnayake thilina.r...@gmail.com wrote: Hi All, Seems

Re: [sympy] factor_list() in Python3

at 8:25 AM, Thilina Rathnayake thilina.r...@gmail.com wrote: Hi All, Seems like there is a bug in factor_list() function in Python 3.2 and Python 3.3 For example, factor_list(y**2 + x*y) fail in Python 3 versions. Check the end of this Travis build report: https://travis-ci.org

Re: [sympy] factor_list() in Python3

Hi Ondrej, I figured it out. thanks to your gist :D Thilina On Sat, Aug 10, 2013 at 11:26 PM, Thilina Rathnayake thilina.r...@gmail.com wrote: Hi Ondrej, I did, but when I do something like `import sympy` in python3 command line it gives an error saying no module named sympy. Do I need

Re: [sympy] factor_list() in Python3

Hi All, I created an issue for this: http://code.google.com/p/sympy/issues/detail?id=3968 Thilina On Sat, Aug 10, 2013 at 11:29 PM, Thilina Rathnayake thilina.r...@gmail.com wrote: Hi Ondrej, I figured it out. thanks to your gist :D Thilina On Sat, Aug 10, 2013 at 11:26 PM, Thilina

Re: [sympy] Issue 766: Refactoring

Hi Bhagya, Welcome to SymPy !!! As I have noticed, some trigonometric functions like tan and sin share the same code. Some functions like cot have the same code but with a slight difference. How do you plan to do the re-factoring? By creating a base class with the shared code and using it as a

[sympy] Status of the Diophantine Module

Hi All, I thought of letting you know about the current status of the Diophantine module. Currently, It solves linear Diophantine equations, Quadratic binary equations and Quadratic ternary equations. In quadratic binary module speed of the solving process can be increased using

[sympy] How to find the exponent of an expression

Hi All, I want to find the exponents of the terms of an expression after using factor(). For example: from sympy import factor from sympy.abc import x,y,z a = x**2 + 2*x*y + y**2 terms = Mul.make_args(factor(a)) I can iterate through `terms` and for each term in terms I want to know

Re: [sympy] Re: How to find the exponent of an expression

Thanks Manoj, That is exactly what I was looking for. On Thu, Aug 1, 2013 at 6:09 PM, Manoj Kumar manojkumarsivaraj...@gmail.comwrote: Hi. Suppose term = (x + y)**2 you can do either term.as_base_exp() , which gives (x + y, 2) or term.args which gives (x + y, 2) , since term is a Pow

Re: [sympy] Ternary quadratic forms and Quadratic congruences

...@gmail.comwrote: On Wed, Jul 31, 2013 at 11:13 PM, Thilina Rathnayake thilina.r...@gmail.com wrote: Hi Ondrej, I am planning to improve the algorithms used in solving binary quadratic equation. (Pernici pointed out some efficient algorithms). Should I commit these changes in a new branch

Re: [sympy] Re: How to find the exponent of an expression

Thanks Aaron. On Thu, Aug 1, 2013 at 10:26 PM, Aaron Meurer asmeu...@gmail.com wrote: Use the factor_list() function instead of factor(). Aaron Meurer On Thu, Aug 1, 2013 at 7:49 AM, Thilina Rathnayake thilina.r...@gmail.com wrote: Thanks Manoj, That is exactly what I was looking

Re: [sympy] Ternary quadratic forms and Quadratic congruences

get more simpler solutions. In this case we can solve y*(y - 7*x + 4z). I will make a commit very soon. Regards, Thilina On Fri, Aug 2, 2013 at 1:13 AM, Ondřej Čertík ondrej.cer...@gmail.comwrote: On Thu, Aug 1, 2013 at 11:26 AM, Thilina Rathnayake thilina.r...@gmail.com wrote: The branch I

Re: [sympy] Ternary quadratic forms and Quadratic congruences

Hi Ondrej, I made a commit. Please have a look at it when you are free. PR: https://github.com/sympy/sympy/pull/2303 Regards, Thilina. On Fri, Aug 2, 2013 at 1:35 AM, Thilina Rathnayake thilina.r...@gmail.comwrote: Hi Ondrej, There was a problem with the equation y**2 - 7*x*y + 4*y*z

Re: [sympy] Ternary quadratic forms and Quadratic congruences

, 2013 at 5:26 PM, Thilina Rathnayake thilina.r...@gmail.comwrote: Hi Ondrej, Sorry for taking a lot of time to send you updates on the project. I had a little busy time since our university is having a drama festival and I had to practice a drama for it. It ends on upcoming Monday, so I

Re: [sympy] Ternary quadratic forms and Quadratic congruences

at 1:10 AM, Thilina Rathnayake thilina.r...@gmail.comwrote: Thanks mario for the great job. Let me try your code. Regards, Thilina On Wed, Jul 24, 2013 at 12:47 AM, Ondřej Čertík ondrej.cer...@gmail.comwrote: Thanks. Should we integrate it into sympy? Ondrej On Tue, Jul 23, 2013 at 1

Re: [sympy] Ternary quadratic forms and Quadratic congruences

to the square free part. It is used the fast ``sqrt_mod`` in https://github.com/sympy/sympy/pull/2307 On Saturday, July 20, 2013 7:40:05 PM UTC+2, Thilina Rathnayake wrote: Thanks Ondrej for putting the link of the PR. I am sorry I forgot to put it. I am really grateful If other's

Re: [sympy] Ternary quadratic forms and Quadratic congruences

Čertík ondrej.cer...@gmail.comwrote: On Fri, Jul 19, 2013 at 1:48 AM, Thilina Rathnayake thilina.r...@gmail.com wrote: Ondrej, I thought of implementing the sieving method described in the book to verify the answers returned by the descent method. It's simple to implement. What

Re: [sympy] Ternary quadratic forms and Quadratic congruences

ondrej.cer...@gmail.comwrote: On Sat, Jul 20, 2013 at 11:25 AM, Thilina Rathnayake thilina.r...@gmail.com wrote: Hi Ondrej, I am pleased to say that I managed to implement the solutions for quadratic ternary forms. Only thing we have to verify is that whether they are complete. I found one

Re: [sympy] Ternary quadratic forms and Quadratic congruences

, 2013 at 1:43 PM, Thilina Rathnayake thilina.r...@gmail.com wrote: Seems like they haven't implement it anywhere else. I found an algorithm that was implemented in MAGMA, but it involves lattice reduction and since I am almost finished with the descent method, I didn't try to implement

Re: [sympy] Ternary quadratic forms and Quadratic congruences

to mario for fixing them. Regards, Thilina On Tue, Jul 16, 2013 at 11:13 PM, Thilina Rathnayake thilina.r...@gmail.com wrote: Thank you very much mario for the trouble taken. I'll let you guys know whether this fix works. On Tue, Jul 16, 2013 at 7:43 PM, Ondřej Čertík ondrej.cer

Re: [sympy] Ternary quadratic forms and Quadratic congruences

We can add descent(23, 616) to the bug list too. It also return (None, None, None) but (6, 1, 38) is a solution. By finding more and more test cases which fail, I think we can identify a pattern and then the cause for the bug. Regards, Thilina -- You received this message because you are

Re: [sympy] Ternary quadratic forms and Quadratic congruences

I should try making input coefficients to be square free. I think the algorithm in general, does not work when the coefficients are not square free. On Thu, Jul 18, 2013 at 2:53 PM, Thilina Rathnayake thilina.r...@gmail.comwrote: We can add descent(23, 616) to the bug list too. It also return

Re: [sympy] Ternary quadratic forms and Quadratic congruences

``A 0, B 0`` On Thursday, July 18, 2013 11:28:22 AM UTC+2, Thilina Rathnayake wrote: I should try making input coefficients to be square free. I think the algorithm in general, does not work when the coefficients are not square free. On Thu, Jul 18, 2013 at 2:53 PM, Thilina

Re: [sympy] Ternary quadratic forms and Quadratic congruences

16, 2013 2:13:32 AM UTC+2, Thilina Rathnayake wrote: Hi Ondrej, Here is my attempt to debug: http://nbviewer.ipython.org/94ee433a4dca26e3fee1 Regards, Thilina. -- You received this message because you are subscribed to the Google Groups sympy group. To unsubscribe from

Re: [sympy] Ternary quadratic forms and Quadratic congruences

, so that users know what it does. That would be good start. If somebody later finds some other software that can do this, or some other reference with examples and results, we can make sure that it returns all the solutions. Ondrej On Sun, Jul 14, 2013 at 11:21 PM, Thilina Rathnayake

Re: [sympy] Ternary quadratic forms and Quadratic congruences

it? But the output [3] seems incorrect to me, isn't it? Let me know which other output you found incorrect. I'll have a look at the book later. Ondrej On Mon, Jul 15, 2013 at 1:22 PM, Thilina Rathnayake thilina.r...@gmail.com wrote: I attached the code herewith as a .py file so you can easily

Re: [sympy] Ternary quadratic forms and Quadratic congruences

Hi Ondrej, Here is the notebook I created: http://nbviewer.ipython.org/3dfe97025f06876820b4 Please let me know if anything needs to be changed. Regards, Thilina. On Tue, Jul 16, 2013 at 2:26 AM, Thilina Rathnayake thilina.r...@gmail.comwrote: Hi Ondrej, Thank you very much for the quick

Re: [sympy] Ternary quadratic forms and Quadratic congruences

Hi Ondrej, Here is my attempt to debug: http://nbviewer.ipython.org/94ee433a4dca26e3fee1 Regards, Thilina. On Tue, Jul 16, 2013 at 3:01 AM, Thilina Rathnayake thilina.r...@gmail.comwrote: Hi Ondrej, Here is the notebook I created: http://nbviewer.ipython.org/3dfe97025f06876820b4 Please

Re: [sympy] SymPy 0.7.3 is released

Mai* Aaron Meurer Angadh Nanjangud Eric Nelson* Sherjil Ozair Mateusz Paprocki Tarang Patel* Khagesh Patel* Mario Pernici Luke Peterson Tyler Pirtle* Vasily Povalyaev* Seshagiri Prabhu* Pradyumna* Roland Puntaier* Bharath M R Shravas K Rao* Thilina Rathnayake* Timothy Reluga

Re: [sympy] Ternary quadratic forms and Quadratic congruences

AM, Thilina Rathnayake thilina.r...@gmail.com wrote: Hi All, I am planning to implement ternary quadratic forms, i.e equations of the form, a*x**2 + by**2 + cz**2 + fxy + gyz + hzx = 0. It would be better If I can find a system which currently implement this so I can validate my

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