Re: [sympy] How can I do summation in live.sympy?

The function is called summation() and the docs are here http://docs.sympy.org/latest/modules/concrete.html#sympy.concrete.summations.summation. Aaron Meurer On Sat, Oct 17, 2015 at 5:18 AM, Q Stollen wrote: > This is about the standard summation with [sigma]. I heard

[sympy] How can I do summation in live.sympy?

This is about the standard summation with [sigma]. I heard there is a function that allows me to do that, but there is no explanation in the whole documentation of sympy (Why did they leave out such an important topic???) So could you explain me how that works? (Example: 1+3+5+7+9+11) -- You

Re: [sympy] Finding the Riemann tensor for the surface of a sphere with sympy.diffgeom

On Saturday, 17 October 2015 17:52:38 UTC+2, Imran Ali wrote: > > But this result does not correspond to the hand calculations of Thomas > Moore : > > Do you know that unlike matrices tensors don't have defined components? I mean, you may vary their valence (i.e. raise and lower the indices),

Re: [sympy] Finding the Riemann tensor for the surface of a sphere with sympy.diffgeom

Hi Ondrej. I implemented this case with sympy.diffgeom, but the results I get back are not what I expected them to be. I posted the implementation here : http://pastebin.com/k7UZ4PYy The Christoffel Riemann tensor the code calculates is as following : [[ [ [0, 0], [0, 0]], [ [0,