Comment #5 on issue 4003 by asmeu...@gmail.com: Cannot return general
quartic solution
http://code.google.com/p/sympy/issues/detail?id=4003
You don't have to worry about not breaking things. We have an extensive
test suite to guard against that.
It seems that the current code is chosen
Sorry for being passive for some days. I was busy with assignments and
some other stuff.
See the work by R. Zippel and S. Landau.
Are you talking these articles:
http://www.sciencedirect.com/science/article/pii/074771719290004N ( A
note on “Zippel Denesting” by Susan Landau )
Hi Pulkit,
Regarding only 2] , I would advise you to solve bugs related to the ODE
module in the issue tracker. This would familiarize you with the hints,
dsolve, classify_ode functions and how things work. After that read the
research paper, to see how the different methods can be applied to
Hi all,
In SymPy is there any way of stopping orthogonal polynomials from
automatically simplifying down to concrete expressions? So for:
sy.jacobi_normalized(2, 0, 1, x)
to give:
sqrt(6)/3*jacobi(2, 0, 1, x)
as opposed to:
sqrt(6)*(5*x**2/2 - x - 1/2)/2
I have a use-case where it is
Unwanted automatic evaluation comes up fairly frequently on the listhost.
It's on our radar but there hasn't been much movement on the issue lately.
It requires a concerted effort by someone with some time.
is there wider interest in such a feature?
Absolutely.
On Wed, Feb 5, 2014 at 2:54 PM,
Although, I don't know much about the polynomials module. It may be
possible to resolve the problem there without tackling the problem at large.
On Wed, Feb 5, 2014 at 3:29 PM, Matthew Rocklin mrock...@gmail.com wrote:
Unwanted automatic evaluation comes up fairly frequently on the listhost.
Isn't the solution simply to provide a class Jacobi, that is not
evaluated, and a function jacobi(), that does what it does now?
Ondrej
On Wed, Feb 5, 2014 at 4:38 PM, Matthew Rocklin mrock...@gmail.com wrote:
Although, I don't know much about the polynomials module. It may be
possible to
I guess I'd like to see code like the following
sy.jacobi_normalized(2, 0, 1, x)
sqrt(6)*(5*x**2/2 - x - 1/2)/2
with evaluation(False):
...sy.jacobi_normalized(2, 0, 1, x)
sqrt(6)/3*jacobi(2, 0, 1, x)
But yes, I suppose we could just capitalize the jacobi class and add an
evaluate=
First off, having your code in a pull request would be extremely helpful.
The problems with '%number' are due to URL encoding, you'll have to
decode the data in app.views.json_creator (not a Django problem, this is a
feature of URLs) or use base64 as Ondrej suggests (you would still need to
On Mon, Feb 3, 2014 at 4:11 PM, someone someb...@bluewin.ch wrote:
We can already solve that one using LambertW (but we need to implement
all the branches,
https://code.google.com/p/sympy/issues/detail?id=4006).
Oh, that was just an example. In this case on can
simplify the TransRootOf
I'm CCing Sergiu, the author of this module.
Aaron Meurer
On Mon, Feb 3, 2014 at 7:31 PM, vincent monde hilbertoper...@gmail.com wrote:
my idea is to construct some associative property and distributivity
property with category package first
and then use hom to combine these category diagram
You'll need an understanding of basic field theory to understand those
algorithms (maybe group theory too if they are using Galois theory).
Aaron Meurer
On Wed, Feb 5, 2014 at 4:09 AM, Harsh Gupta gupta.hars...@gmail.com wrote:
Sorry for being passive for some days. I was busy with assignments
We should just change all the special polynomial objects to not
evaluate by default. jacobi_normalized actually *is* a class, but it
evaluates whenever the degree is an explicit integer. But there's no
need for this, as we already have *_poly versions of these functions
to do that.
Until this
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