[sympy] Solving of system of trigonometric equation

2015-03-07 Thread Андрей Ширшов
Hi! I'd like to solve the following system of trigonometric equation: (R+r)*cos(gamma1) + r*cos(k*gamma1+alpha_0) == (R+r)*cos(gamma2) + r*cos(k* gamma2+alpha_1) (R+r)*cos(gamma1) + r*cos(k*gamma1+alpha_0) == (R+r)*cos(gamma2) + r*cos(k* gamma2+alpha_1) where: gamma1, gamma2 = var('gamma1,

Re: [sympy] Post are moderated?

2015-03-07 Thread Pratik Patel
On Saturday, March 7, 2015 at 7:45:11 PM UTC+5:30, Ondřej Čertík wrote: Hi Praktik, On Sat, Mar 7, 2015 at 12:40 AM, Pratik Patel pratikpa...@gmail.com javascript: wrote: Hi, Sometimes ago i made one post(Introduction) and it is not displayed in the group. I can see your

Re: [sympy] GSoC 2015 Karr Algorithm

2015-03-07 Thread Aaron Meurer
Wasn't there an implementation in Maple? Is it online? Aaron Meurer On Sat, Mar 7, 2015 at 11:27 AM, someone someb...@bluewin.ch wrote: Hi, I want to implement Karr Algorithm for GSoC 2015. I have read the Karr's original paper This is just for Background and basic definition. It is not

Re: [sympy] GSOC 2015: Extending ODE module.

2015-03-07 Thread Mihir Wadwekar
I am kind of stuck in my proposal. For solving 2nd order DE's I need their symmetries. In every source on the ideas page as well as other papers I read much is written about solving the ODE after the symmetries have been extracted. I am not able to find a concise algorithm which helps me in

Re: [sympy] GSoC 2015 Karr Algorithm

2015-03-07 Thread someone
Hi, I want to implement Karr Algorithm for GSoC 2015. I have read the Karr's original paper This is just for Background and basic definition. It is not complete enough for a modern implementation. and Brucin Erocal's thesis http://www.sagemath.org/files/thesis/erocal-thesis-2011.pdf He

[sympy] Re: Introduction and need advice

2015-03-07 Thread Ramana Venkata
Go through this https://github.com/sympy/sympy/wiki/introduction-to-contributing If you have any questions feel free to ask here or on gitter. On Saturday, March 7, 2015 at 1:29:06 PM UTC+5:30, Pratik Patel wrote: Hello, My name is Pratik Patel. I'm from India. I am 2nd year Computer

Re: [sympy] Re: [GSoC 2015] Solvers : Extending Solveset

2015-03-07 Thread AMiT Kumar
Hi, I saw that the solving of linear systems is also a Mess in the current solve, There is lot of duplication of Methods/Algorithms in the current code, as mentioned by Aaron in this PR. Ref: https://github.com/sympy/sympy/pull/2580 We need to have a General linear solve for solving system

Re: [sympy] Circular imports: We have a problem

2015-03-07 Thread Joachim Durchholz
Am 06.03.2015 um 23:12 schrieb Aaron Meurer: So one of your suggestions is probably the best fix. Your suggestion 2 (or 3, I don't see the difference) sounds like the best plan to me. The plan was to have 2: Set up S.Whatever but delay instance creation, and 3: delay S.Whatever creation.

Re: [sympy] Re: CAD Implementation - GSoC 2015

2015-03-07 Thread Aaron Meurer
A suggestion is to show a fake session where you show what the module will do (like a doctest for the final function showing inputs and outputs). This shows that you at least are thinking about the API, and that you understand the problem. For something as complicated as CAD, I would also make

[sympy] Re: Introduction and need advice

2015-03-07 Thread Ramana Venkata
That is huge list of ideas probably you should narrow down on them a little bit . I am not associated with nay of them. I can give some general advice. First setup your environment and satisfy the patch requirement for GSoC. This help you get hang of things. Pick an easy to fix issue in the

Re: [sympy] Re: [GSoC 2015] Solvers : Extending Solveset

2015-03-07 Thread AMiT Kumar
Hi, I was thinking, How about designing the solveset similiar to the ODE Module . Something like hints system to classify solvers? Example: primaryhint = [ univariate, multivariate, single_eq, multiple_eq ] subhints = [ 'solve_linear_system' 'linear_trig',