Incomplete elliptic integral of the third kind: Series representations (formula 08.06.06.0018)

EllipticPi

$Mathematica Notation$

Elliptic Integrals

EllipticPi[n,z,m]

Series representations

Generalized power series

Expansions at n==infinity

http://functions.wolfram.com/08.06.06.0018.01

Input Form

EllipticPi[n, z, m] == 2 EllipticPi[n, m] Round[Re[z]/Pi] + (-1)^Round[Re[z]/Pi] (Sum[n^(-k - 1) (((Sin[z]^(-2 k - 3) (m Sin[z]^2)^(3/2 + k) Sqrt[1 - m Sin[z]^2])/(m Sqrt[Cos[z]^2])) Sqrt[(m Cos[z]^2)/(m - 1)] AppellF1[1/2, 3/2 + k, 1/2, 3/2, 1 - m Sin[z]^2, (1 - m Sin[z]^2)/(1 - m)] + ((Pi (m Sin[z]^2)^(1/2) m^k Sqrt[m/(m - 1)])/ (Sin[z] Pochhammer[3/2, k])) Hypergeometric2F1Regularized[1/2, 1/2, -k, 1/(1 - m)]), {k, 0, Infinity}] + (Pi I Sqrt[n])/(2 Sqrt[n - 1] Sqrt[n - m]))

Standard Form

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MathML Form

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</ms> <apply> <ci> TagBox </ci> <apply> <ci> TagBox </ci> <apply> <ci> TagBox </ci> <apply> <ci> RowBox </ci> <list> <ms> - </ms> <ms> k </ms> </list> </apply> <ci> Hypergeometric2F1Regularized </ci> <apply> <ci> Rule </ci> <ci> Editable </ci> <true /> </apply> </apply> <apply> <ci> InterpretTemplate </ci> <apply> <ci> Function </ci> <list> <apply> <ci> SlotSequence </ci> <cn type='integer'> 1 </cn> </apply> </list> </apply> </apply> </apply> <ci> Hypergeometric2F1Regularized </ci> <apply> <ci> Rule </ci> <ci> Editable </ci> <false /> </apply> </apply> <ms> ; </ms> <apply> <ci> TagBox </ci> <apply> <ci> FractionBox </ci> <ms> 1 </ms> <apply> <ci> RowBox </ci> <list> <ms> 1 </ms> <ms> - </ms> <ms> m </ms> </list> </apply> </apply> <ci> Hypergeometric2F1Regularized </ci> <apply> <ci> Rule </ci> <ci> Editable </ci> <true /> </apply> </apply> </list> </apply> <ms> ) </ms> </list> </apply> </list> </apply> <apply> <ci> InterpretTemplate </ci> <apply> <ci> Function </ci> <apply> <ci> HypergeometricPFQRegularized </ci> <apply> <ci> Slot </ci> <cn type='integer'> 1 </cn> </apply> <apply> <ci> Slot </ci> <cn type='integer'> 2 </cn> </apply> <apply> <ci> Slot </ci> <cn type='integer'> 3 </cn> </apply> </apply> </apply> </apply> <apply> <ci> Rule </ci> <ci> Editable </ci> <false /> </apply> </apply> <ci> Hypergeometric2F1Regularized </ci> </apply> </list> </apply> </list> </apply> <ms> ) </ms> </list> </apply> </list> </apply> </list> </apply> <ms> + </ms> <apply> <ci> FractionBox </ci> <apply> <ci> RowBox </ci> <list> <ms> π </ms> <ms> ⅈ </ms> <apply> <ci> SqrtBox </ci> <ms> n </ms> </apply> </list> </apply> <apply> <ci> RowBox </ci> <list> <ms> 2 </ms> <apply> <ci> SqrtBox </ci> <apply> <ci> RowBox </ci> <list> <ms> n </ms> <ms> - </ms> <ms> 1 </ms> </list> </apply> </apply> <apply> <ci> SqrtBox </ci> <apply> <ci> RowBox </ci> <list> <ms> n </ms> <ms> - </ms> <ms> m </ms> </list> </apply> </apply> </list> </apply> </apply> </list> </apply> <ms> ) </ms> </list> </apply> </list> </apply> <ms> + </ms> <apply> <ci> RowBox </ci> <list> <ms> 2 </ms> <apply> <ci> RowBox </ci> <list> <ms> ⌊ </ms> <apply> <ci> FractionBox </ci> <apply> <ci> RowBox </ci> <list> <ms> Re </ms> <ms> ( </ms> <ms> z </ms> <ms> ) </ms> </list> </apply> <ms> π </ms> </apply> <ms> ⌉ </ms> </list> </apply> <apply> <ci> RowBox </ci> <list> <ms> Π </ms> <ms> ( </ms> <apply> <ci> RowBox </ci> <list> <ms> n </ms> <ms> ❘ </ms> <ms> m </ms> </list> </apply> <ms> ) </ms> </list> </apply> </list> </apply> </list> </apply> </list> </apply> <ci> TraditionalForm </ci> </apply> </annotation-xml> </semantics> </math>

Rule Form

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Date Added to functions.wolfram.com (modification date)

2007-05-02

EllipticPi[n,m]