Regarding the topic of my Proposal

[Kundan Kumar]

Hi,

I would like to discuss the topic that I want to implement in sympy in gsoc 2014.

I had looked at sympy ideas page and found few interesting ideas.

1. Implement the solution of system of ordinary differential equation. 

which will include

 i)Linear system of two equations

  a) System of first order equation.

  b)System of second order equation.

 ii)Linear system of three or more equations.

 iii)Nonlinear system of two equations

  a)System of first order equations.

  b)System of second order equations.  

 iv)Nonlinear system of three or more equations.

2.Implementation of Lie Groups methods for 2nd order ordinary differential equations (like of the form y'' = g(x, y, y') and then finding the infinitesimal of this equation for one-parameter lie group).

I would highly appreciate comments on my ideas and do suggest if anything needs to be added on it.

Also I have question regarding solving of bug, what is last date till which i can submit bugs.

Thanks in advance.

[Aaron Meurer]

I think at least ii is already implement.

The patch submission deadline is the same as the proposal deadline.

Aaron Meurer

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[Kundan Kumar]

So you are saying ii)Linear system of three or more ODEs equations like " x'(t) = cy – bz, y'(t) = az – cx, z'(t) = bx – ay " is already implemented in sympy.

If yes do inform me so that I can update my proposal

[Kundan Kumar]

I searched for it Aaron but cant find whether ii) is implemented. Please inform me if it is.

[Aaron Meurer]

Sorry for being late to reply to this, but I guess I was referring to
https://github.com/sympy/sympy/pull/1322, which isn't merged yet (I
had thought it was). It looks like there is some work to do on that to
fix it up, though.

Aaron Meurer

On Sun, Mar 16, 2014 at 5:52 AM, Kundan Kumar
<kundanku...@gmail.com> wrote:
> I searched for it Aaron but cant find whether ii) is implemented. Please
> inform me if it is.
>
>
> On Sunday, March 16, 2014 11:38:32 AM UTC+5:30, Kundan Kumar wrote:
>>
>> So you are saying ii)Linear system of three or more ODEs equations like "

>> x'(t) = cy - bz, y'(t) = az - cx, z'(t) = bx - ay " is already implemented

> https://groups.google.com/d/msgid/sympy/6a457339-5956-4052-96f3-618e0368afae%40googlegroups.com.

[Kundan Kumar]

Well Thanks Aaron for informing me about that. Though its little late as now I cant edit my proposal.
But I went through the PR, method of implementation of some of system of ode have already been proposed and coded by Krastanov. Though, as you pointed out, it need some modifications and fixing.
I would like to draw your attention towards my proposal which includes lot more of not implemented parts of system of ode. I have also added in the proposal a symmetry method solver and have included to extend if any time left.
As I also learned that we can comment on the proposal to elaborate the ideas, if mentors like it. So if you have any doubts regarding my proposal or anything that can be added, do contact me.

Thanks