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The Polylogarithm Function

. Archive of Formal Proofs, (November 2023)https://isa-afp.org/entries/Polylog.html, Formal proof development.

Abstract

This entry provides a definition of the Polylogarithm function, commonly denoted as . Here, is a complex number and an integer parameter. This function can be defined by the power series expression for and analytically extended to the entire complex plane, except for a branch cut on . Several basic properties are also proven, such as the relationship to the Eulerian polynomials via for , the derivative formula , the relation to the “normal” logarithm via , and the duplication formula .

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The Polylogarithm Function - Archive of Formal Proofs

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