The dilogarithm identity
Landen's Identity
See also
DilogarithmExplore with Wolfram|Alpha
References
Gordon, B. and McIntosh, R. J. "Algebraic Dilogarithm Identities." Ramanujan J. 1, 431-448, 1997.Landen, J. Mathematical Memoirs Respecting a Variety of Subjects, with an Appendix Containing Tables of Theorems, Vol. 1. London: printed for the author, p. 112, 1780-1789.Referenced on Wolfram|Alpha
Landen's IdentityCite this as:
Weisstein, Eric W. "Landen's Identity." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/LandensIdentity.html