Euler’s dilogarithm is a complex valued function given by
The dilogarithm is a special case of the polylogarithm . The Bloch–Wigner dilogarithm is defined by
The dilogarithm has remarkable relations to many areas of mathematics and mathematical physics including scissors congruence, Reidemeister’s torsion, regulators in higher algebraic K-theory, the Bloch group, CFT, Liouville's gravity?, hyperbolic geometry? and cluster transformations.
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