How can I do summation in live.sympy?

[Q Stollen]

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)

[Aaron Meurer]

The function is called summation() and the docs are here
http://docs.sympy.org/latest/modules/concrete.html#sympy.concrete.summations.summation.

Aaron Meurer

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