SymPy gives I*pi for sqrt(-12*polylog(2,-1)). According to http://docs.sympy.org/latest/modules/functions/special.html#sympy.functions.special.zeta_functions.polylog, polylog(s, -1) is the same as dirichlet_eta(s). The definitions for polylog in the sympy and mpmath docs look the same, so is SymPy wrong here, or am I missing something (WolframAlpha seems to agree with mpmath)?
Aaron Meurer On Fri, Mar 11, 2016 at 10:36 AM, Sumith 1896 <[email protected]> wrote: > Even I was trying to deduce some math series :') > > > On Fri, 11 Mar 2016 9:02 pm Fredrik Johansson <[email protected]> > wrote: >> >> On Friday, March 11, 2016 at 2:57:17 PM UTC+1, Gaurav Dhingra wrote: >>> >>> How are you numbering the `tests`, (i don't understand). Is there some >>> maths sequence that you are following. >>> pi_001, pi_002, pi_005, pi_008, pi_010, pi_027 >> >> >> It's arbitrary. They are just numbered in the order the examples were >> added. >> >> Fredrik >> >> -- >> You received this message because you are subscribed to the Google Groups >> "sympy" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected]. >> To post to this group, send email to [email protected]. >> Visit this group at https://groups.google.com/group/sympy. >> To view this discussion on the web visit >> https://groups.google.com/d/msgid/sympy/0607ad3c-8e13-436d-9089-7763d6a2841a%40googlegroups.com. >> For more options, visit https://groups.google.com/d/optout. > > -- > You received this message because you are subscribed to the Google Groups > "sympy" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To post to this group, send email to [email protected]. > Visit this group at https://groups.google.com/group/sympy. > To view this discussion on the web visit > https://groups.google.com/d/msgid/sympy/CAFeyqwOMVnzX1Xtnv3jNLRVdxX%3Dx4ALJ1%3D3tdTzYpq_LXnMrQQ%40mail.gmail.com. > > For more options, visit https://groups.google.com/d/optout. -- You received this message because you are subscribed to the Google Groups "sympy" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at https://groups.google.com/group/sympy. To view this discussion on the web visit https://groups.google.com/d/msgid/sympy/CAKgW%3D6L7aDShbMECR8WDgmANnfMibc6ZOEN3%2BBE2uy43sJd34Q%40mail.gmail.com. For more options, visit https://groups.google.com/d/optout.
