[sympy] maxwell's equation example can't find galgebra

2017-02-15 Thread Henri Girard
Hi, I am new to sympy and I wanted to try it on maxwell's equations examples so I installed galgebra from git but it doesn't work ? the import is not found... ANy help ? regards Henri import sys import sympy.galgebra.GAsympy as GA import sympy.galgebra.latex_ex as tex GA.set_main(sys.modules[_

Re: [sympy] maxwell's equation example can't find galgebra

2017-02-15 Thread Alan Bromborsky
When you get galgebra from git in the galgebra/doc directory is galgebra.pdf. In section 1.3 of the document are instructions of how to install galgebra including how to set the python path so that other python programs can find galgebra. On Wed, Feb 15, 2017 at 5:35 AM, Henri Girard wrote: > H

Re: [sympy] maxwell's equation example can't find galgebra

2017-02-15 Thread Alan Bromborsky
Here is a example of Maxwell's equation using the galgebra module from github import sys from sympy import symbols,sin,cos,exp,I,Matrix,simplify,Eq,S from sympy.solvers import solve from printer import Format,xpdf,Get_Program,Print_Function,Fmt from ga import Ga from metric import linear_expand d

[sympy] Re: solving an equation-system with nsolve, including the upper gamma function

2017-02-15 Thread Max Winkler
Thank you, it works fine now. Sorry for my late answer, I was quite busy in the last days. Am Montag, 13. Februar 2017 17:49:38 UTC+1 schrieb Max Winkler: > > Hi, I'm trying to solve an equation-system with nsolve. One of the > equations includes the upper gamma function, which has one of the

Re: [sympy] solving an equation-system with nsolve, including the upper gamma function

2017-02-15 Thread Max Winkler
Thank you, it works fine now. Sorry for my late answer, I was quite busy in the last days. Am Montag, 13. Februar 2017 21:12:23 UTC+1 schrieb Aaron Meurer: > > It looks like lambdify doesn't know how to turn uppergamma into mpmath > functions, since mpmath doesn't have uppergamma directly. Look

[sympy] factoring matrix

2017-02-15 Thread Sebastian Luque
Hello, I'm trying to work out the derivation of the relationship between Euler angle rates in terms of Euler angles and angular rates in body frame (e.g. http://dma.ing.uniroma1.it/users/lss_da/MATERIALE/Textbook.pdf section 1.2.2). I have developed this for the so-called "Tait-Bryant" rotation a

Re: [sympy] factoring matrix

2017-02-15 Thread Jason Moore
If you take the Jacobian with respect to your b vector I think you should get A. Jason moorepants.info +01 530-601-9791 On Wed, Feb 15, 2017 at 1:17 PM, Sebastian Luque wrote: > Hello, > > I'm trying to work out the derivation of the relationship between Euler > angle rates in terms of Euler a

Re: [sympy] factoring matrix

2017-02-15 Thread Sebastian Luque
Brilliant! Thank you. On Wednesday, February 15, 2017 at 3:35:24 PM UTC-6, Jason Moore wrote: > > If you take the Jacobian with respect to your b vector I think you should > get A. > > > Jason > moorepants.info > +01 530-601-9791 > > On Wed, Feb 15, 2017 at 1:17 PM, Sebastian Luque > wrote: >

[sympy] product rule in differentiate_finite in sympy 1.0.1

2017-02-15 Thread Federico Halpern
Hi everyone, I just started using sympy. I expect that I will use the finite differencing routines to automatically generate arbitrary precision operators (for example, the Arakawa bracket). This is for use in a plasma turbulence / stability code. My thanks go to the developers for creating th

Re: [sympy] product rule in differentiate_finite in sympy 1.0.1

2017-02-15 Thread Aaron Meurer
Can you open an issue for this in the issue tracker? https://github.com/sympy/sympy/issues Aaron Meurer On Wed, Feb 15, 2017 at 6:43 PM, Federico Halpern wrote: > Hi everyone, > > I just started using sympy. I expect that I will use the finite differencing > routines to automatically generate ar