Updates:
Status: Valid
Labels: Series
Comment #1 on issue 3810 by [email protected]: Wrong limit of expression
equivalent to zeta(2*k)
http://code.google.com/p/sympy/issues/detail?id=3810
The zeta one probably just works because zeta(oo) is defined in the zeta
constructor.
Perhaps this is related
In [24]: gruntz((-1)**(k+1)*bernoulli(2*k) *(2* pi)**(2*k)/(2 *
factorial(2*k)), k, oo)
---------------------------------------------------------------------------
AttributeError Traceback (most recent call last)
<ipython-input-24-22601d440e2b> in <module>()
----> 1 gruntz((-1)**(k+1)*bernoulli(2*k) *(2* pi)**(2*k)/(2 *
factorial(2*k)), k, oo)
/Users/aaronmeurer/Documents/Python/sympy/sympy/sympy/series/gruntz.pyc in
gruntz(e, z, z0, dir)
712 # It might be nicer to rewrite the exactly to what they were
initially,
713 # but that would take some work to implement.
--> 714 return r.rewrite('intractable', deep=True)
AttributeError: 'NoneType' object has no attribute 'rewrite'
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