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   http://functions.wolfram.com/07.24.26.0136.01
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    (Sqrt[z] + Sqrt[1 + z])^(1 - c) Hypergeometric2F1Regularized[a, 1/2 + a, c, 
    (Sqrt[z] - Sqrt[1 + z])/(2 Sqrt[z])] Hypergeometric2F1Regularized[
    1 + a - c, 3/2 + a - c, 3/2 + 2 a - c, (Sqrt[z] - Sqrt[1 + z])/
     (2 Sqrt[z])] == (2^(-(1/2) + 4 a - c)/(Pi Gamma[2 a])) 
   MeijerG[{{(3 - c)/2}, {2 - (3 c)/2 + 2 a, 1 - c/2 + 2 a, (1 + c)/2}}, 
    {{(1 - c)/2 + a, (3 - 2 c)/4 + a, 1 - c/2 + a, (5 - 2 c)/4 + a}, {}}, 
    z] /;  !IntervalMemberQ[Interval[{-1, 0}], z] 
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   Cell[BoxData[RowBox[List[RowBox[List[RowBox[List[SuperscriptBox[RowBox[List["(", RowBox[List[SqrtBox["z"], "+", SqrtBox[RowBox[List["1", "+", "z"]]]]], ")"]], RowBox[List["1", "-", "c"]]], " ", RowBox[List["Hypergeometric2F1Regularized", "[", RowBox[List["a", ",", RowBox[List[FractionBox["1", "2"], "+", "a"]], ",", "c", ",", FractionBox[RowBox[List[SqrtBox["z"], "-", SqrtBox[RowBox[List["1", "+", "z"]]]]], RowBox[List["2", SqrtBox["z"]]]]]], "]"]], " ", RowBox[List["Hypergeometric2F1Regularized", "[", RowBox[List[RowBox[List["1", "+", "a", "-", "c"]], ",", RowBox[List[FractionBox["3", "2"], "+", "a", "-", "c"]], ",", RowBox[List[FractionBox["3", "2"], "+", RowBox[List["2", " ", "a"]], "-", "c"]], ",", FractionBox[RowBox[List[SqrtBox["z"], "-", SqrtBox[RowBox[List["1", "+", "z"]]]]], RowBox[List["2", SqrtBox["z"]]]]]], "]"]]]], "\[Equal]", RowBox[List[FractionBox[SuperscriptBox["2", RowBox[List[RowBox[List["-", FractionBox["1", "2"]]], "+", RowBox[List["4", " ", "a"]], "-", "c"]]], RowBox[List["\[Pi]", " ", RowBox[List["Gamma", "[", RowBox[List["2", " ", "a"]], "]"]]]]], RowBox[List["MeijerG", "[", RowBox[List[RowBox[List["{", RowBox[List[RowBox[List["{", FractionBox[RowBox[List["3", "-", "c"]], "2"], "}"]], ",", RowBox[List["{", RowBox[List[RowBox[List["2", "-", FractionBox[RowBox[List["3", "c"]], "2"], "+", RowBox[List["2", "a"]]]], ",", RowBox[List["1", "-", FractionBox["c", "2"], "+", RowBox[List["2", " ", "a"]]]], ",", FractionBox[RowBox[List["1", "+", "c"]], "2"]]], "}"]]]], "}"]], ",", RowBox[List["{", RowBox[List[RowBox[List["{", RowBox[List[RowBox[List[FractionBox[RowBox[List["1", "-", "c"]], "2"], "+", "a"]], ",", RowBox[List[FractionBox[RowBox[List["3", "-", RowBox[List["2", "c"]]]], "4"], "+", "a"]], ",", RowBox[List["1", "-", FractionBox["c", "2"], "+", "a"]], ",", RowBox[List[FractionBox[RowBox[List["5", "-", RowBox[List["2", "c"]]]], "4"], "+", "a"]]]], "}"]], ",", RowBox[List["{", "}"]]]], "}"]], ",", "z"]], "]"]]]]]], "/;", RowBox[List["Not", "[", RowBox[List["IntervalMemberQ", "[", RowBox[List[RowBox[List["Interval", "[", RowBox[List["{", RowBox[List[RowBox[List["-", "1"]], ",", "0"]], "}"]], "]"]], ",", "z"]], "]"]], "]"]]]]]] 
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</mo>  <mi> c </mi>  </mrow>  <mn> 2 </mn>  </mfrac>  </mrow>  <mo> , </mo>  <mrow>  <mi> a </mi>  <mo> + </mo>  <mfrac>  <mrow>  <mn> 3 </mn>  <mo> - </mo>  <mrow>  <mn> 2 </mn>  <mo> ⁢ </mo>  <mi> c </mi>  </mrow>  </mrow>  <mn> 4 </mn>  </mfrac>  </mrow>  <mo> , </mo>  <mrow>  <mi> a </mi>  <mo> - </mo>  <mfrac>  <mi> c </mi>  <mn> 2 </mn>  </mfrac>  <mo> + </mo>  <mn> 1 </mn>  </mrow>  <mo> , </mo>  <mrow>  <mi> a </mi>  <mo> + </mo>  <mfrac>  <mrow>  <mn> 5 </mn>  <mo> - </mo>  <mrow>  <mn> 2 </mn>  <mo> ⁢ </mo>  <mi> c </mi>  </mrow>  </mrow>  <mn> 4 </mn>  </mfrac>  </mrow>  </mrow>  </mtd>  </mtr>  </mtable>  </mrow>  <mo> ) </mo>  </mrow>  </mrow>  <annotation encoding='Mathematica'> TagBox[RowBox[List[SubsuperscriptBox[TagBox["G", MeijerG], RowBox[List["4", ",", "4"]], RowBox[List["4", ",", "1"]]], "\[InvisibleApplication]", RowBox[List["(", RowBox[List[TagBox["z", MeijerG, Rule[Editable, True]], "\[VerticalSeparator]", GridBox[List[List[RowBox[List[TagBox[FractionBox[RowBox[List["3", "-", "c"]], "2"], MeijerG, Rule[Editable, True]], ",", TagBox[RowBox[List[RowBox[List["2", " ", "a"]], "-", FractionBox[RowBox[List["3", " ", "c"]], "2"], "+", "2"]], MeijerG, Rule[Editable, True]], ",", TagBox[RowBox[List[RowBox[List["2", " ", "a"]], "-", FractionBox["c", "2"], "+", "1"]], MeijerG, Rule[Editable, True]], ",", TagBox[FractionBox[RowBox[List["c", "+", "1"]], "2"], MeijerG, Rule[Editable, True]]]]], List[RowBox[List[TagBox[RowBox[List["a", "+", FractionBox[RowBox[List["1", "-", "c"]], "2"]]], MeijerG, Rule[Editable, True]], ",", TagBox[RowBox[List["a", "+", FractionBox[RowBox[List["3", "-", RowBox[List["2", "c"]]]], "4"]]], MeijerG, Rule[Editable, True]], ",", TagBox[RowBox[List["a", "-", FractionBox["c", "2"], "+", "1"]], MeijerG, Rule[Editable, True]], ",", TagBox[RowBox[List["a", "+", FractionBox[RowBox[List["5", "-", RowBox[List["2", "c"]]]], "4"]]], MeijerG, Rule[Editable, True]]]]]]]]], ")"]]]], MeijerG, Rule[Editable, False]] </annotation>  </semantics>  </mrow>  </mrow>  <mo> /; </mo>  <mrow>  <mi> z </mi>  <mo> ∉ </mo>  <mrow>  <mo> ( </mo>  <mrow>  <mrow>  <mo> - 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</mo>  <mi> c </mi>  </mrow>  <mn> 2 </mn>  </mfrac>  </mrow>  <mo> , </mo>  <mrow>  <mi> a </mi>  <mo> + </mo>  <mfrac>  <mrow>  <mn> 3 </mn>  <mo> - </mo>  <mrow>  <mn> 2 </mn>  <mo> ⁢ </mo>  <mi> c </mi>  </mrow>  </mrow>  <mn> 4 </mn>  </mfrac>  </mrow>  <mo> , </mo>  <mrow>  <mi> a </mi>  <mo> - </mo>  <mfrac>  <mi> c </mi>  <mn> 2 </mn>  </mfrac>  <mo> + </mo>  <mn> 1 </mn>  </mrow>  <mo> , </mo>  <mrow>  <mi> a </mi>  <mo> + </mo>  <mfrac>  <mrow>  <mn> 5 </mn>  <mo> - </mo>  <mrow>  <mn> 2 </mn>  <mo> ⁢ </mo>  <mi> c </mi>  </mrow>  </mrow>  <mn> 4 </mn>  </mfrac>  </mrow>  </mrow>  </mtd>  </mtr>  </mtable>  </mrow>  <mo> ) </mo>  </mrow>  </mrow>  <annotation encoding='Mathematica'> TagBox[RowBox[List[SubsuperscriptBox[TagBox["G", MeijerG], RowBox[List["4", ",", "4"]], RowBox[List["4", ",", "1"]]], "\[InvisibleApplication]", RowBox[List["(", RowBox[List[TagBox["z", MeijerG, Rule[Editable, True]], "\[VerticalSeparator]", GridBox[List[List[RowBox[List[TagBox[FractionBox[RowBox[List["3", "-", "c"]], "2"], MeijerG, Rule[Editable, True]], ",", TagBox[RowBox[List[RowBox[List["2", " ", "a"]], "-", FractionBox[RowBox[List["3", " ", "c"]], "2"], "+", "2"]], MeijerG, Rule[Editable, True]], ",", TagBox[RowBox[List[RowBox[List["2", " ", "a"]], "-", FractionBox["c", "2"], "+", "1"]], MeijerG, Rule[Editable, True]], ",", TagBox[FractionBox[RowBox[List["c", "+", "1"]], "2"], MeijerG, Rule[Editable, True]]]]], List[RowBox[List[TagBox[RowBox[List["a", "+", FractionBox[RowBox[List["1", "-", "c"]], "2"]]], MeijerG, Rule[Editable, True]], ",", TagBox[RowBox[List["a", "+", FractionBox[RowBox[List["3", "-", RowBox[List["2", "c"]]]], "4"]]], MeijerG, Rule[Editable, True]], ",", TagBox[RowBox[List["a", "-", FractionBox["c", "2"], "+", "1"]], MeijerG, Rule[Editable, True]], ",", TagBox[RowBox[List["a", "+", FractionBox[RowBox[List["5", "-", RowBox[List["2", "c"]]]], "4"]]], MeijerG, Rule[Editable, True]]]]]]]]], ")"]]]], MeijerG, Rule[Editable, False]] </annotation>  </semantics>  </mrow>  </mrow>  <mo> /; </mo>  <mrow>  <mi> z </mi>  <mo> ∉ </mo>  <mrow>  <mo> ( </mo>  <mrow>  <mrow>  <mo> - </mo>  <mn> 1 </mn>  </mrow>  <mo> , </mo>  <mn> 0 </mn>  </mrow>  <mo> ) </mo>  </mrow>  </mrow>  </mrow>  </annotation-xml>  </semantics>  </math> 
   
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| HypergeometricPFQRegularized[{},{b},z] |  | HypergeometricPFQRegularized[{a1},{b1},z] |  | HypergeometricPFQRegularized[{a1,...,ap},{b1,...,bq},z] |  |   |  
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