PolyLog[n, z] gives the polylogarithm function .
PolyLog[n, p, z] gives the Nielsen generalized polylogarithm function .
Mathematical function (see Section A.3.10).
PolyLog[n, z] has a branch cut discontinuity in the complex z plane running from to .
FullSimplify and FunctionExpand include transformation rules for PolyLog.
See The Mathematica Book: Section 3.2.10.
Implementation Notes: see section A.9.4.
See also: Zeta, PolyGamma, LerchPhi.