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   http://functions.wolfram.com/03.19.07.0001.01
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    KelvinKei[\[Nu], z] == (-(1/(8 Pi I))) ContourIntegral[
   (Gamma[s + \[Nu]/4] Gamma[s - \[Nu]/4] Gamma[s + (\[Nu] + 2)/4] 
      Gamma[s + (2 - \[Nu])/4])/(Gamma[\[Nu]/2 + s] Gamma[1 - \[Nu]/2 - s])/
    (z/4)^(4 s), \[ScriptCapitalL]["s"]] 
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   Cell[BoxData[RowBox[List[RowBox[List["KelvinKei", "[", RowBox[List["\[Nu]", ",", "z"]], "]"]], "\[Equal]", RowBox[List[RowBox[List["-", FractionBox["1", RowBox[List["8", "\[Pi]", " ", "\[ImaginaryI]"]]]]], RowBox[List[SubscriptBox["\[Integral]", "\[ScriptCapitalL]"], RowBox[List[FractionBox[RowBox[List[RowBox[List["Gamma", "[", RowBox[List["s", "+", FractionBox["\[Nu]", "4"]]], "]"]], RowBox[List["Gamma", "[", RowBox[List["s", "-", FractionBox["\[Nu]", "4"]]], "]"]], RowBox[List["Gamma", "[", RowBox[List["s", "+", FractionBox[RowBox[List["\[Nu]", "+", "2"]], "4"]]], "]"]], RowBox[List["Gamma", "[", RowBox[List["s", "+", FractionBox[RowBox[List["2", "-", "\[Nu]"]], "4"]]], "]"]]]], RowBox[List[RowBox[List["Gamma", "[", RowBox[List[FractionBox["\[Nu]", "2"], "+", "s"]], "]"]], RowBox[List["Gamma", "[", RowBox[List["1", "-", FractionBox["\[Nu]", "2"], "-", "s"]], "]"]]]]], SuperscriptBox[RowBox[List["(", FractionBox["z", "4"], ")"]], RowBox[List[RowBox[List["-", "4"]], "s"]]], RowBox[List["\[DifferentialD]", "s"]]]]]]]]]]]] 
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   <math xmlns='http://www.w3.org/1998/Math/MathML' mathematica:form='TraditionalForm' xmlns:mathematica='http://www.wolfram.com/XML/'>  <semantics>  <mrow>  <mrow>  <msub>  <mi> kei </mi>  <mi> ν </mi>  </msub>  <mo> ( </mo>  <mi> z </mi>  <mo> ) </mo>  </mrow>  <mo> ⩵ </mo>  <mrow>  <mrow>  <mo> - </mo>  <mfrac>  <mn> 1 </mn>  <mrow>  <mn> 8 </mn>  <mo> ⁢ </mo>  <mi> π </mi>  <mo> ⁢ </mo>  <mi> ⅈ </mi>  </mrow>  </mfrac>  </mrow>  <mo> ⁢ </mo>  <mrow>  <msub>  <mo> ∫ </mo>  <mi> ℒ </mi>  </msub>  <mrow>  <mfrac>  <mrow>  <mrow>  <mi> Γ </mi>  <mo> ⁡ </mo>  <mo> ( </mo>  <mrow>  <mi> s </mi>  <mo> + </mo>  <mfrac>  <mi> ν </mi>  <mn> 4 </mn>  </mfrac>  </mrow>  <mo> ) </mo>  </mrow>  <mo> ⁢ </mo>  <mrow>  <mi> Γ </mi>  <mo> ⁡ </mo>  <mo> ( </mo>  <mrow>  <mi> s </mi>  <mo> - </mo>  <mfrac>  <mi> ν </mi>  <mn> 4 </mn>  </mfrac>  </mrow>  <mo> ) </mo>  </mrow>  <mo> ⁢ </mo>  <mrow>  <mi> Γ </mi>  <mo> ⁡ </mo>  <mo> ( </mo>  <mrow>  <mfrac>  <mrow>  <mi> ν </mi>  <mo> + </mo>  <mn> 2 </mn>  </mrow>  <mn> 4 </mn>  </mfrac>  <mo> + </mo>  <mi> s </mi>  </mrow>  <mo> ) </mo>  </mrow>  <mo> ⁢ </mo>  <mrow>  <mi> Γ </mi>  <mo> ⁡ </mo>  <mo> ( </mo>  <mrow>  <mi> s </mi>  <mo> + </mo>  <mfrac>  <mrow>  <mn> 2 </mn>  <mo> - </mo>  <mi> ν </mi>  </mrow>  <mn> 4 </mn>  </mfrac>  </mrow>  <mo> ) </mo>  </mrow>  </mrow>  <mrow>  <mrow>  <mi> Γ </mi>  <mo> ⁡ </mo>  <mo> ( </mo>  <mrow>  <mi> s </mi>  <mo> + </mo>  <mfrac>  <mi> ν </mi>  <mn> 2 </mn>  </mfrac>  </mrow>  <mo> ) </mo>  </mrow>  <mo> ⁢ </mo>  <mrow>  <mi> Γ </mi>  <mo> ⁡ </mo>  <mo> ( </mo>  <mrow>  <mn> 1 </mn>  <mo> - </mo>  <mfrac>  <mi> ν </mi>  <mn> 2 </mn>  </mfrac>  <mo> - </mo>  <mi> s </mi>  </mrow>  <mo> ) </mo>  </mrow>  </mrow>  </mfrac>  <mo> ⁢ </mo>  <msup>  <mrow>  <mo> ( </mo>  <mfrac>  <mi> z </mi>  <mn> 4 </mn>  </mfrac>  <mo> ) </mo>  </mrow>  <mrow>  <mrow>  <mo> - </mo>  <mn> 4 </mn>  </mrow>  <mo> ⁢ </mo>  <mi> s </mi>  </mrow>  </msup>  <mo> ⁢ </mo>  <mrow>  <mo> ⅆ </mo>  <mi> s </mi>  </mrow>  </mrow>  </mrow>  </mrow>  </mrow>  <annotation-xml encoding='MathML-Content'>  <apply>  <ci> FormBox </ci>  <apply>  <ci> RowBox </ci>  <list>  <apply>  <ci> RowBox </ci>  <list>  <apply>  <ci> SubscriptBox </ci>  <ms> kei </ms>  <ms> ν </ms>  </apply>  <ms> ( </ms>  <ms> z </ms>  <ms> ) </ms>  </list>  </apply>  <ms> ⩵ </ms>  <apply>  <ci> RowBox </ci>  <list>  <apply>  <ci> RowBox </ci>  <list>  <ms> - </ms>  <apply>  <ci> FractionBox </ci>  <ms> 1 </ms>  <apply>  <ci> RowBox </ci>  <list>  <ms> 8 </ms>  <ms> π </ms>  <ms> ⅈ </ms>  </list>  </apply>  </apply>  </list>  </apply>  <apply>  <ci> RowBox </ci>  <list>  <apply>  <ci> SubscriptBox </ci>  <apply>  <ci> ErrorBox </ci>  <ms> ∫ </ms>  </apply>  <ms> ℒ </ms>  </apply>  <apply>  <ci> RowBox </ci>  <list>  <apply>  <ci> FractionBox </ci>  <apply>  <ci> RowBox </ci>  <list>  <apply>  <ci> RowBox </ci>  <list>  <ms> Γ </ms>  <ms> ( </ms>  <apply>  <ci> RowBox </ci>  <list>  <ms> s </ms>  <ms> + </ms>  <apply>  <ci> FractionBox </ci>  <ms> ν </ms>  <ms> 4 </ms>  </apply>  </list>  </apply>  <ms> ) </ms>  </list>  </apply>  <apply>  <ci> RowBox </ci>  <list>  <ms> Γ </ms>  <ms> ( </ms>  <apply>  <ci> RowBox </ci>  <list>  <ms> s </ms>  <ms> - </ms>  <apply>  <ci> FractionBox </ci>  <ms> ν </ms>  <ms> 4 </ms>  </apply>  </list>  </apply>  <ms> ) </ms>  </list>  </apply>  <apply>  <ci> RowBox </ci>  <list>  <ms> Γ </ms>  <ms> ( </ms>  <apply>  <ci> RowBox </ci>  <list>  <apply>  <ci> FractionBox </ci>  <apply>  <ci> RowBox </ci>  <list>  <ms> ν </ms>  <ms> + </ms>  <ms> 2 </ms>  </list>  </apply>  <ms> 4 </ms>  </apply>  <ms> + </ms>  <ms> s </ms>  </list>  </apply>  <ms> ) </ms>  </list>  </apply>  <apply>  <ci> RowBox </ci>  <list>  <ms> Γ </ms>  <ms> ( </ms>  <apply>  <ci> RowBox </ci>  <list>  <ms> s </ms>  <ms> + </ms>  <apply>  <ci> FractionBox </ci>  <apply>  <ci> RowBox </ci>  <list>  <ms> 2 </ms>  <ms> - </ms>  <ms> ν </ms>  </list>  </apply>  <ms> 4 </ms>  </apply>  </list>  </apply>  <ms> ) </ms>  </list>  </apply>  </list>  </apply>  <apply>  <ci> RowBox </ci>  <list>  <apply>  <ci> RowBox </ci>  <list>  <ms> Γ </ms>  <ms> ( </ms>  <apply>  <ci> RowBox </ci>  <list>  <ms> s </ms>  <ms> + </ms>  <apply>  <ci> FractionBox </ci>  <ms> ν </ms>  <ms> 2 </ms>  </apply>  </list>  </apply>  <ms> ) </ms>  </list>  </apply>  <apply>  <ci> RowBox </ci>  <list>  <ms> Γ </ms>  <ms> ( </ms>  <apply>  <ci> RowBox </ci>  <list>  <ms> 1 </ms>  <ms> - </ms>  <apply>  <ci> FractionBox </ci>  <ms> ν </ms>  <ms> 2 </ms>  </apply>  <ms> - </ms>  <ms> s </ms>  </list>  </apply>  <ms> ) </ms>  </list>  </apply>  </list>  </apply>  </apply>  <apply>  <ci> SuperscriptBox </ci>  <apply>  <ci> RowBox </ci>  <list>  <ms> ( </ms>  <apply>  <ci> FractionBox </ci>  <ms> z </ms>  <ms> 4 </ms>  </apply>  <ms> ) </ms>  </list>  </apply>  <apply>  <ci> RowBox </ci>  <list>  <apply>  <ci> RowBox </ci>  <list>  <ms> - </ms>  <ms> 4 </ms>  </list>  </apply>  <ms> s </ms>  </list>  </apply>  </apply>  <apply>  <ci> RowBox </ci>  <list>  <ms> ⅆ </ms>  <ms> s </ms>  </list>  </apply>  </list>  </apply>  </list>  </apply>  </list>  </apply>  </list>  </apply>  <ci> TraditionalForm </ci>  </apply>  </annotation-xml>  </semantics>  </math> 
   
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  | Cell[BoxData[RowBox[List[RowBox[List["HoldPattern", "[", RowBox[List["KelvinKei", "[", RowBox[List["\[Nu]_", ",", "z_"]], "]"]], "]"]], "\[RuleDelayed]", RowBox[List["-", FractionBox[RowBox[List["ContourIntegral", "[", RowBox[List[FractionBox[RowBox[List[RowBox[List["(", RowBox[List[RowBox[List["Gamma", "[", RowBox[List["s", "+", FractionBox["\[Nu]", "4"]]], "]"]], " ", RowBox[List["Gamma", "[", RowBox[List["s", "-", FractionBox["\[Nu]", "4"]]], "]"]], " ", RowBox[List["Gamma", "[", RowBox[List["s", "+", FractionBox[RowBox[List["\[Nu]", "+", "2"]], "4"]]], "]"]], " ", RowBox[List["Gamma", "[", RowBox[List["s", "+", FractionBox[RowBox[List["2", "-", "\[Nu]"]], "4"]]], "]"]]]], ")"]], " ", SuperscriptBox[RowBox[List["(", FractionBox["z", "4"], ")"]], RowBox[List[RowBox[List["-", "4"]], " ", "s"]]]]], RowBox[List[RowBox[List["Gamma", "[", RowBox[List[FractionBox["\[Nu]", "2"], "+", "s"]], "]"]], " ", RowBox[List["Gamma", "[", RowBox[List["1", "-", FractionBox["\[Nu]", "2"], "-", "s"]], "]"]]]]], ",", RowBox[List["\[ScriptCapitalL]", "[", "\"s\"", "]"]]]], "]"]], RowBox[List["8", " ", "\[Pi]", " ", "\[ImaginaryI]"]]]]]]]]]  |  
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   Date Added to functions.wolfram.com (modification date)
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