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 | | http://functions.wolfram.com/07.36.04.0021.01 | 
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 | | Limit[AppellF1[a, Subscript[b, 1], Subscript[b, 2], c, 
    Subscript[x, 1] + I \[Epsilon], Subscript[z, 2]], 
   \[Epsilon] -> Plus[0]] == E^(2 I Pi (a - c + Subscript[b, 1])) 
    AppellF1[a, Subscript[b, 1], Subscript[b, 2], c, Subscript[x, 1], 
     Subscript[z, 2]] + ((2 I E^(I Pi (a - c + Subscript[b, 1])) Pi Gamma[c])/
     (Gamma[c - a] Gamma[1 + a - c + Subscript[b, 1]] 
      Gamma[c - Subscript[b, 1]])) HypergeometricPFQ[
     {{a}, {Subscript[b, 1]}, {Subscript[b, 2]}}, 
     {{}, {1 + a - c + Subscript[b, 1]}, {c - Subscript[b, 1]}}, 
     1 - Subscript[x, 1], Subscript[z, 2]] /; Subscript[x, 1] > 1 | 
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 | | Cell[BoxData[RowBox[List[RowBox[List[RowBox[List["Limit", "[", RowBox[List[RowBox[List["AppellF1", "[", RowBox[List["a", ",", SubscriptBox["b", "1"], ",", SubscriptBox["b", "2"], ",", "c", ",", RowBox[List[SubscriptBox["x", "1"], "+", RowBox[List["\[ImaginaryI]", " ", "\[Epsilon]"]]]], ",", SubscriptBox["z", "2"]]], "]"]], ",", RowBox[List["\[Epsilon]", "\[Rule]", RowBox[List["+", "0"]]]]]], "]"]], "\[Equal]", RowBox[List[RowBox[List[SuperscriptBox["\[ExponentialE]", RowBox[List["2", " ", "\[ImaginaryI]", " ", "\[Pi]", " ", RowBox[List["(", RowBox[List["a", "-", "c", "+", SubscriptBox["b", "1"]]], ")"]]]]], RowBox[List["AppellF1", "[", RowBox[List["a", ",", SubscriptBox["b", "1"], ",", SubscriptBox["b", "2"], ",", "c", ",", SubscriptBox["x", "1"], ",", SubscriptBox["z", "2"]]], "]"]]]], "+", RowBox[List[FractionBox[RowBox[List["2", " ", "\[ImaginaryI]", " ", SuperscriptBox["\[ExponentialE]", RowBox[List["\[ImaginaryI]", " ", "\[Pi]", " ", RowBox[List["(", RowBox[List["a", "-", "c", "+", SubscriptBox["b", "1"]]], ")"]]]]], " ", "\[Pi]", " ", RowBox[List["Gamma", "[", "c", "]"]]]], RowBox[List[RowBox[List["Gamma", "[", RowBox[List["c", "-", "a"]], "]"]], RowBox[List["Gamma", "[", RowBox[List["1", "+", "a", "-", "c", "+", SubscriptBox["b", "1"]]], "]"]], " ", RowBox[List["Gamma", "[", RowBox[List["c", "-", SubscriptBox["b", "1"]]], "]"]]]]], RowBox[List["HypergeometricPFQ", "[", RowBox[List[RowBox[List["{", RowBox[List[RowBox[List["{", "a", "}"]], ",", RowBox[List["{", SubscriptBox["b", "1"], "}"]], ",", RowBox[List["{", SubscriptBox["b", "2"], "}"]]]], "}"]], ",", RowBox[List["{", RowBox[List[RowBox[List["{", "}"]], ",", RowBox[List["{", RowBox[List["1", "+", "a", "-", "c", "+", SubscriptBox["b", "1"]]], "}"]], ",", RowBox[List["{", RowBox[List["c", "-", SubscriptBox["b", "1"]]], "}"]]]], "}"]], ",", RowBox[List["1", "-", SubscriptBox["x", "1"]]], ",", SubscriptBox["z", "2"]]], "]"]]]]]]]], "/;", RowBox[List[SubscriptBox["x", "1"], ">", "1"]]]]]] | 
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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>  <mrow>  <munder>  <mi> lim </mi>  <mrow>  <mi> ϵ </mi>  <semantics>  <mo> → </mo>  <annotation encoding='Mathematica'> "\[Rule]" </annotation>  </semantics>  <mrow>  <mo> + </mo>  <mn> 0 </mn>  </mrow>  </mrow>  </munder>  <mo> ⁢ </mo>  <mtext>   </mtext>  <mrow>  <semantics>  <msub>  <mi> F </mi>  <mn> 1 </mn>  </msub>  <annotation-xml encoding='MathML-Content'>  <ci> AppellF1 </ci>  </annotation-xml>  </semantics>  <mo> ( </mo>  <mrow>  <mrow>  <mi> a </mi>  <mo> ; </mo>  <msub>  <mi> b </mi>  <mn> 1 </mn>  </msub>  </mrow>  <mo> , </mo>  <mrow>  <msub>  <mi> b </mi>  <mn> 2 </mn>  </msub>  <mo> ; </mo>  <mi> c </mi>  <mo> ; </mo>  <mrow>  <msub>  <mi> x </mi>  <mn> 1 </mn>  </msub>  <mo> + </mo>  <mrow>  <mi> ⅈ </mi>  <mo> ⁢ </mo>  <mi> ϵ </mi>  </mrow>  </mrow>  </mrow>  <mo> , </mo>  <msub>  <mi> z </mi>  <mn> 2 </mn>  </msub>  </mrow>  <mo> ) </mo>  </mrow>  </mrow>  <mo> ⩵ </mo>  <mrow>  <mrow>  <msup>  <mi> ⅇ </mi>  <mrow>  <mn> 2 </mn>  <mo> ⁢ </mo>  <mi> ⅈ </mi>  <mo> ⁢ </mo>  <mi> π </mi>  <mo> ⁢ </mo>  <mrow>  <mo> ( </mo>  <mrow>  <mi> a </mi>  <mo> - </mo>  <mi> c </mi>  <mo> + </mo>  <msub>  <mi> b </mi>  <mn> 1 </mn>  </msub>  </mrow>  <mo> ) </mo>  </mrow>  </mrow>  </msup>  <mo> ⁢ </mo>  <mrow>  <semantics>  <msub>  <mi> F </mi>  <mn> 1 </mn>  </msub>  <annotation-xml encoding='MathML-Content'>  <ci> AppellF1 </ci>  </annotation-xml>  </semantics>  <mo> ( </mo>  <mrow>  <mrow>  <mi> a </mi>  <mo> ; </mo>  <msub>  <mi> b </mi>  <mn> 1 </mn>  </msub>  </mrow>  <mo> , </mo>  <mrow>  <msub>  <mi> b </mi>  <mn> 2 </mn>  </msub>  <mo> ; </mo>  <mi> c </mi>  <mo> ; </mo>  <msub>  <mi> x </mi>  <mn> 1 </mn>  </msub>  </mrow>  <mo> , </mo>  <msub>  <mi> z </mi>  <mn> 2 </mn>  </msub>  </mrow>  <mo> ) </mo>  </mrow>  </mrow>  <mo> + </mo>  <mrow>  <mfrac>  <mrow>  <mn> 2 </mn>  <mo> ⁢ </mo>  <mi> ⅈ </mi>  <mo> ⁢ </mo>  <msup>  <mi> ⅇ </mi>  <mrow>  <mi> ⅈ </mi>  <mo> ⁢ </mo>  <mi> π </mi>  <mo> ⁢ </mo>  <mrow>  <mo> ( </mo>  <mrow>  <mi> a </mi>  <mo> - </mo>  <mi> c </mi>  <mo> + </mo>  <msub>  <mi> b </mi>  <mn> 1 </mn>  </msub>  </mrow>  <mo> ) </mo>  </mrow>  </mrow>  </msup>  <mo> ⁢ </mo>  <mi> π </mi>  <mo> ⁢ </mo>  <mrow>  <mi> Γ </mi>  <mo> ⁡ </mo>  <mo> ( </mo>  <mi> c </mi>  <mo> ) </mo>  </mrow>  </mrow>  <mrow>  <mrow>  <mi> Γ </mi>  <mo> ⁡ </mo>  <mo> ( </mo>  <mrow>  <mi> c </mi>  <mo> - </mo>  <mi> a </mi>  </mrow>  <mo> ) </mo>  </mrow>  <mo> ⁢ </mo>  <mrow>  <mi> Γ </mi>  <mo> ⁡ </mo>  <mo> ( </mo>  <mrow>  <mi> a </mi>  <mo> - </mo>  <mi> c </mi>  <mo> + </mo>  <msub>  <mi> b </mi>  <mn> 1 </mn>  </msub>  <mo> + </mo>  <mn> 1 </mn>  </mrow>  <mo> ) </mo>  </mrow>  <mo> ⁢ </mo>  <mrow>  <mi> Γ </mi>  <mo> ⁡ </mo>  <mo> ( </mo>  <mrow>  <mi> c </mi>  <mo> - </mo>  <msub>  <mi> b </mi>  <mn> 1 </mn>  </msub>  </mrow>  <mo> ) </mo>  </mrow>  </mrow>  </mfrac>  <mo> ⁢ </mo>  <mrow>  <msubsup>  <mi> F </mi>  <mrow>  <mn> 0 </mn>  <mo> ⁢ </mo>  <mn> 1 </mn>  <mo> ⁢ </mo>  <mn> 1 </mn>  </mrow>  <mrow>  <mn> 1 </mn>  <mo> ⁢ </mo>  <mn> 1 </mn>  <mo> ⁢ </mo>  <mn> 1 </mn>  </mrow>  </msubsup>  <mo> ( </mo>  <mrow>  <mrow>  <mrow>  <mtable>  <mtr>  <mtd>  <mrow>  <mi> a </mi>  <mo> ; </mo>  <msub>  <mi> b </mi>  <mn> 1 </mn>  </msub>  <mo> ; </mo>  <msub>  <mi> b </mi>  <mn> 2 </mn>  </msub>  <mo> ; </mo>  </mrow>  </mtd>  </mtr>  <mtr>  <mtd>  <mrow>  <mo> ; </mo>  <mrow>  <mi> a </mi>  <mo> - </mo>  <mi> c </mi>  <mo> + </mo>  <msub>  <mi> b </mi>  <mn> 1 </mn>  </msub>  <mo> + </mo>  <mn> 1 </mn>  </mrow>  <mo> ; </mo>  <mrow>  <mi> c </mi>  <mo> - </mo>  <msub>  <mi> b </mi>  <mn> 1 </mn>  </msub>  </mrow>  <mo> ; </mo>  </mrow>  </mtd>  </mtr>  </mtable>  <mo> ⁢ </mo>  <mn> 1 </mn>  </mrow>  <mo> - </mo>  <msub>  <mi> x </mi>  <mn> 1 </mn>  </msub>  </mrow>  <mo> , </mo>  <msub>  <mi> z </mi>  <mn> 2 </mn>  </msub>  </mrow>  <mo> ) </mo>  </mrow>  </mrow>  </mrow>  </mrow>  <mo> /; </mo>  <mrow>  <msub>  <mi> x </mi>  <mn> 1 </mn>  </msub>  <mo> > </mo>  <mn> 1 </mn>  </mrow>  </mrow>  <annotation-xml encoding='MathML-Content'>  <apply>  <ci> FormBox </ci>  <apply>  <ci> RowBox </ci>  <list>  <apply>  <ci> RowBox </ci>  <list>  <apply>  <ci> RowBox </ci>  <list>  <apply>  <ci> UnderscriptBox </ci>  <ms> lim </ms>  <apply>  <ci> RowBox </ci>  <list>  <ms> ϵ </ms>  <ms>  </ms>  <apply>  <ci> RowBox </ci>  <list>  <ms> + </ms>  <ms> 0 </ms>  </list>  </apply>  </list>  </apply>  </apply>  <apply>  <ci> RowBox </ci>  <list>  <apply>  <ci> InterpretationBox </ci>  <apply>  <ci> SubscriptBox </ci>  <ms> F </ms>  <ms> 1 </ms>  </apply>  <ci> AppellF1 </ci>  <apply>  <ci> Rule </ci>  <ci> Editable </ci>  <false />  </apply>  <apply>  <ci> Rule </ci>  <ci> Selectable </ci>  <false />  </apply>  </apply>  <ms> ( </ms>  <apply>  <ci> RowBox </ci>  <list>  <apply>  <ci> RowBox </ci>  <list>  <ms> a </ms>  <ms> ; </ms>  <apply>  <ci> SubscriptBox </ci>  <ms> b </ms>  <ms> 1 </ms>  </apply>  </list>  </apply>  <ms> , </ms>  <apply>  <ci> RowBox </ci>  <list>  <apply>  <ci> SubscriptBox </ci>  <ms> b </ms>  <ms> 2 </ms>  </apply>  <ms> ; </ms>  <ms> c </ms>  <ms> ; </ms>  <apply>  <ci> RowBox </ci>  <list>  <apply>  <ci> SubscriptBox </ci>  <ms> x </ms>  <ms> 1 </ms>  </apply>  <ms> + </ms>  <apply>  <ci> RowBox </ci>  <list>  <ms> ⅈ </ms>  <ms> ϵ </ms>  </list>  </apply>  </list>  </apply>  </list>  </apply>  <ms> , </ms>  <apply>  <ci> SubscriptBox </ci>  <ms> z </ms>  <ms> 2 </ms>  </apply>  </list>  </apply>  <ms> ) </ms>  </list>  </apply>  </list>  </apply>  <ms> ⩵ </ms>  <apply>  <ci> RowBox </ci>  <list>  <apply>  <ci> RowBox </ci>  <list>  <apply>  <ci> SuperscriptBox </ci>  <ms> ⅇ </ms>  <apply>  <ci> RowBox </ci>  <list>  <ms> 2 </ms>  <ms> ⅈ </ms>  <ms> π </ms>  <apply>  <ci> RowBox </ci>  <list>  <ms> ( </ms>  <apply>  <ci> RowBox </ci>  <list>  <ms> a </ms>  <ms> - </ms>  <ms> c </ms>  <ms> + </ms>  <apply>  <ci> SubscriptBox </ci>  <ms> b </ms>  <ms> 1 </ms>  </apply>  </list>  </apply>  <ms> ) </ms>  </list>  </apply>  </list>  </apply>  </apply>  <apply>  <ci> RowBox </ci>  <list>  <apply>  <ci> InterpretationBox </ci>  <apply>  <ci> SubscriptBox </ci>  <ms> F </ms>  <ms> 1 </ms>  </apply>  <ci> AppellF1 </ci>  <apply>  <ci> Rule </ci>  <ci> Editable </ci>  <false />  </apply>  <apply>  <ci> Rule </ci>  <ci> Selectable </ci>  <false />  </apply>  </apply>  <ms> ( </ms>  <apply>  <ci> RowBox </ci>  <list>  <apply>  <ci> RowBox </ci>  <list>  <ms> a </ms>  <ms> ; </ms>  <apply>  <ci> SubscriptBox </ci>  <ms> b </ms>  <ms> 1 </ms>  </apply>  </list>  </apply>  <ms> , </ms>  <apply>  <ci> RowBox </ci>  <list>  <apply>  <ci> SubscriptBox </ci>  <ms> b </ms>  <ms> 2 </ms>  </apply>  <ms> ; </ms>  <ms> c </ms>  <ms> ; </ms>  <apply>  <ci> SubscriptBox </ci>  <ms> x </ms>  <ms> 1 </ms>  </apply>  </list>  </apply>  <ms> , </ms>  <apply>  <ci> SubscriptBox </ci>  <ms> z </ms>  <ms> 2 </ms>  </apply>  </list>  </apply>  <ms> ) </ms>  </list>  </apply>  </list>  </apply>  <ms> + </ms>  <apply>  <ci> RowBox </ci>  <list>  <apply>  <ci> FractionBox </ci>  <apply>  <ci> RowBox </ci>  <list>  <ms> 2 </ms>  <ms> ⅈ </ms>  <apply>  <ci> SuperscriptBox </ci>  <ms> ⅇ </ms>  <apply>  <ci> RowBox </ci>  <list>  <ms> ⅈ </ms>  <ms> π </ms>  <apply>  <ci> RowBox </ci>  <list>  <ms> ( </ms>  <apply>  <ci> RowBox </ci>  <list>  <ms> a </ms>  <ms> - </ms>  <ms> c </ms>  <ms> + </ms>  <apply>  <ci> SubscriptBox </ci>  <ms> b </ms>  <ms> 1 </ms>  </apply>  </list>  </apply>  <ms> ) </ms>  </list>  </apply>  </list>  </apply>  </apply>  <ms> π </ms>  <apply>  <ci> RowBox </ci>  <list>  <ms> Γ </ms>  <ms> ( </ms>  <ms> c </ms>  <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> c </ms>  <ms> - </ms>  <ms> a </ms>  </list>  </apply>  <ms> ) </ms>  </list>  </apply>  <apply>  <ci> RowBox </ci>  <list>  <ms> Γ </ms>  <ms> ( </ms>  <apply>  <ci> RowBox </ci>  <list>  <ms> a </ms>  <ms> - </ms>  <ms> c </ms>  <ms> + </ms>  <apply>  <ci> SubscriptBox </ci>  <ms> b </ms>  <ms> 1 </ms>  </apply>  <ms> + </ms>  <ms> 1 </ms>  </list>  </apply>  <ms> ) </ms>  </list>  </apply>  <apply>  <ci> RowBox </ci>  <list>  <ms> Γ </ms>  <ms> ( </ms>  <apply>  <ci> RowBox </ci>  <list>  <ms> c </ms>  <ms> - </ms>  <apply>  <ci> SubscriptBox </ci>  <ms> b </ms>  <ms> 1 </ms>  </apply>  </list>  </apply>  <ms> ) </ms>  </list>  </apply>  </list>  </apply>  </apply>  <apply>  <ci> RowBox </ci>  <list>  <apply>  <ci> SubsuperscriptBox </ci>  <ms> F </ms>  <apply>  <ci> RowBox </ci>  <list>  <ms> 0 </ms>  <ms> 1 </ms>  <ms> 1 </ms>  </list>  </apply>  <apply>  <ci> RowBox </ci>  <list>  <ms> 1 </ms>  <ms> 1 </ms>  <ms> 1 </ms>  </list>  </apply>  </apply>  <ms> [ </ms>  <apply>  <ci> RowBox </ci>  <list>  <apply>  <ci> RowBox </ci>  <list>  <apply>  <ci> GridBox </ci>  <list>  <list>  <apply>  <ci> RowBox </ci>  <list>  <ms> a </ms>  <ms> ; </ms>  <apply>  <ci> SubscriptBox </ci>  <ms> b </ms>  <ms> 1 </ms>  </apply>  <ms> ; </ms>  <apply>  <ci> SubscriptBox </ci>  <ms> b </ms>  <ms> 2 </ms>  </apply>  <ms> ; </ms>  </list>  </apply>  </list>  <list>  <apply>  <ci> ErrorBox </ci>  <apply>  <ci> RowBox </ci>  <list>  <ms> ; </ms>  <apply>  <ci> RowBox </ci>  <list>  <ms> a </ms>  <ms> - </ms>  <ms> c </ms>  <ms> + </ms>  <apply>  <ci> SubscriptBox </ci>  <ms> b </ms>  <ms> 1 </ms>  </apply>  <ms> + </ms>  <ms> 1 </ms>  </list>  </apply>  <ms> ; </ms>  <apply>  <ci> RowBox </ci>  <list>  <ms> c </ms>  <ms> - </ms>  <apply>  <ci> SubscriptBox </ci>  <ms> b </ms>  <ms> 1 </ms>  </apply>  </list>  </apply>  <ms> ; </ms>  </list>  </apply>  </apply>  </list>  </list>  </apply>  <ms> 1 </ms>  </list>  </apply>  <ms> - </ms>  <apply>  <ci> SubscriptBox </ci>  <ms> x </ms>  <ms> 1 </ms>  </apply>  </list>  </apply>  <ms> , </ms>  <apply>  <ci> SubscriptBox </ci>  <ms> z </ms>  <ms> 2 </ms>  </apply>  <ms> ] </ms>  </list>  </apply>  </list>  </apply>  </list>  </apply>  </list>  </apply>  <ms> /; </ms>  <apply>  <ci> RowBox </ci>  <list>  <apply>  <ci> SubscriptBox </ci>  <ms> x </ms>  <ms> 1 </ms>  </apply>  <ms> > </ms>  <ms> 1 </ms>  </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["Limit", "[", RowBox[List[RowBox[List["AppellF1", "[", RowBox[List["a_", ",", SubscriptBox["b_", "1"], ",", SubscriptBox["b_", "2"], ",", "c_", ",", RowBox[List[SubscriptBox["x_", "1"], "+", RowBox[List["\[ImaginaryI]", " ", "\[Epsilon]_"]]]], ",", SubscriptBox["z_", "2"]]], "]"]], ",", RowBox[List["\[Epsilon]_", "\[Rule]", RowBox[List["+", "0"]]]]]], "]"]], "]"]], "\[RuleDelayed]", RowBox[List[RowBox[List[RowBox[List[SuperscriptBox["\[ExponentialE]", RowBox[List["2", " ", "\[ImaginaryI]", " ", "\[Pi]", " ", RowBox[List["(", RowBox[List["a", "-", "c", "+", SubscriptBox["bb", "1"]]], ")"]]]]], " ", RowBox[List["AppellF1", "[", RowBox[List["a", ",", SubscriptBox["bb", "1"], ",", SubscriptBox["bb", "2"], ",", "c", ",", SubscriptBox["xx", "1"], ",", SubscriptBox["zz", "2"]]], "]"]]]], "+", FractionBox[RowBox[List[RowBox[List["(", RowBox[List["2", " ", "\[ImaginaryI]", " ", SuperscriptBox["\[ExponentialE]", RowBox[List["\[ImaginaryI]", " ", "\[Pi]", " ", RowBox[List["(", RowBox[List["a", "-", "c", "+", SubscriptBox["bb", "1"]]], ")"]]]]], " ", "\[Pi]", " ", RowBox[List["Gamma", "[", "c", "]"]]]], ")"]], " ", RowBox[List["HypergeometricPFQ", "[", RowBox[List[RowBox[List["{", RowBox[List[RowBox[List["{", "a", "}"]], ",", RowBox[List["{", SubscriptBox["bb", "1"], "}"]], ",", RowBox[List["{", SubscriptBox["bb", "2"], "}"]]]], "}"]], ",", RowBox[List["{", RowBox[List[RowBox[List["{", "}"]], ",", RowBox[List["{", RowBox[List["1", "+", "a", "-", "c", "+", SubscriptBox["bb", "1"]]], "}"]], ",", RowBox[List["{", RowBox[List["c", "-", SubscriptBox["bb", "1"]]], "}"]]]], "}"]], ",", RowBox[List["1", "-", SubscriptBox["xx", "1"]]], ",", SubscriptBox["zz", "2"]]], "]"]]]], RowBox[List[RowBox[List["Gamma", "[", RowBox[List["c", "-", "a"]], "]"]], " ", RowBox[List["Gamma", "[", RowBox[List["1", "+", "a", "-", "c", "+", SubscriptBox["bb", "1"]]], "]"]], " ", RowBox[List["Gamma", "[", RowBox[List["c", "-", SubscriptBox["bb", "1"]]], "]"]]]]]]], "/;", RowBox[List[SubscriptBox["xx", "1"], ">", "1"]]]]]]]] | 
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