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   http://functions.wolfram.com/07.32.03.0025.01
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    HypergeometricPFQRegularized[{a, Subscript[a, 2], \[Ellipsis], 
    Subscript[a, q + 1]}, {Subscript[a, 2] + Subscript[n, 2], \[Ellipsis], 
    Subscript[a, q + 1] + Subscript[n, q + 1]}, 1] == 
  Gamma[1 - a] Sum[(1/((Subscript[n, k] - 1)! 
       Gamma[Subscript[a, k] - a + 1])) 
     Sum[((Pochhammer[1 - Subscript[n, k], j] Pochhammer[Subscript[a, k], j])/
        (j! Pochhammer[Subscript[a, k] - a + 1, j])) 
       Product[If[l == k, 1, Pochhammer[1 - Subscript[a, l] + 
            Subscript[a, k] - Subscript[n, l], j]/(Gamma[Subscript[a, l]] 
           Pochhammer[Subscript[a, l] - Subscript[a, k], Subscript[n, l]] 
           Pochhammer[1 - Subscript[a, l] + Subscript[a, k], j])], 
        {l, 2, q + 1}], {j, 0, Subscript[n, k] - 1}], {k, 2, q + 1}] /; 
 Re[a] < Sum[Subscript[n, j], {j, 2, q + 1}] && 
  Element[Subscript[n, j], Integers] && Subscript[n, j] > 0 && 2 <= j <= q + 1 
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   Cell[BoxData[RowBox[List[RowBox[List[RowBox[List["HypergeometricPFQRegularized", "[", RowBox[List[RowBox[List["{", RowBox[List["a", ",", SubscriptBox["a", "2"], ",", "\[Ellipsis]", ",", SubscriptBox["a", RowBox[List["q", "+", "1"]]]]], "}"]], ",", RowBox[List["{", RowBox[List[RowBox[List[SubscriptBox["a", "2"], "+", SubscriptBox["n", "2"]]], ",", "\[Ellipsis]", ",", RowBox[List[SubscriptBox["a", RowBox[List["q", "+", "1"]]], "+", SubscriptBox["n", RowBox[List["q", "+", "1"]]]]]]], "}"]], ",", "1"]], "]"]], "\[Equal]", RowBox[List[RowBox[List["Gamma", "[", RowBox[List["1", "-", "a"]], "]"]], RowBox[List[UnderoverscriptBox["\[Sum]", RowBox[List["k", "=", "2"]], RowBox[List["q", "+", "1"]]], RowBox[List[FractionBox["1", RowBox[List[RowBox[List[RowBox[List["(", RowBox[List[SubscriptBox["n", "k"], "-", "1"]], ")"]], "!"]], RowBox[List["Gamma", "[", RowBox[List[SubscriptBox["a", "k"], "-", "a", "+", "1"]], "]"]]]]], RowBox[List[UnderoverscriptBox["\[Sum]", RowBox[List["j", "=", "0"]], RowBox[List[SubscriptBox["n", "k"], "-", "1"]]], RowBox[List[FractionBox[RowBox[List[RowBox[List["Pochhammer", "[", RowBox[List[RowBox[List["1", "-", SubscriptBox["n", "k"]]], ",", "j"]], "]"]], RowBox[List["Pochhammer", "[", RowBox[List[SubscriptBox["a", "k"], ",", "j"]], "]"]]]], RowBox[List[RowBox[List["j", "!"]], RowBox[List["Pochhammer", "[", RowBox[List[RowBox[List[SubscriptBox["a", "k"], "-", "a", "+", "1"]], ",", "j"]], "]"]]]]], RowBox[List[UnderoverscriptBox["\[Product]", RowBox[List["l", "=", "2"]], RowBox[List["q", "+", "1"]]], RowBox[List["If", "[", RowBox[List[RowBox[List["l", "\[Equal]", "k"]], ",", "1", ",", RowBox[List[RowBox[List["Pochhammer", "[", RowBox[List[RowBox[List["1", "-", SubscriptBox["a", "l"], "+", SubscriptBox["a", "k"], "-", SubscriptBox["n", "l"]]], ",", "j"]], "]"]], "/", RowBox[List["(", RowBox[List[RowBox[List["Gamma", "[", SubscriptBox["a", "l"], "]"]], RowBox[List["Pochhammer", "[", RowBox[List[RowBox[List[SubscriptBox["a", "l"], "-", SubscriptBox["a", "k"]]], ",", SubscriptBox["n", "l"]]], "]"]], RowBox[List["Pochhammer", "[", RowBox[List[RowBox[List["1", "-", SubscriptBox["a", "l"], "+", SubscriptBox["a", "k"]]], ",", "j"]], "]"]]]], ")"]]]]]], "]"]]]]]]]]]]]]]]]], "/;", RowBox[List[RowBox[List[RowBox[List["Re", "[", "a", "]"]], "<", RowBox[List[UnderoverscriptBox["\[Sum]", RowBox[List["j", "=", "2"]], RowBox[List["q", "+", "1"]]], SubscriptBox["n", "j"]]]]], "\[And]", RowBox[List[SubscriptBox["n", "j"], "\[Element]", "Integers"]], "\[And]", RowBox[List[SubscriptBox["n", "j"], ">", "0"]], "\[And]", RowBox[List["2", "\[LessEqual]", "j", "\[LessEqual]", RowBox[List["q", "+", "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>  <semantics>  <mrow>  <mrow>  <msub>  <mo>   </mo>  <mrow>  <mi> q </mi>  <mo> + </mo>  <mn> 1 </mn>  </mrow>  </msub>  <msub>  <mover>  <mi> F </mi>  <mo> ~ </mo>  </mover>  <mi> q </mi>  </msub>  </mrow>  <mo> ⁡ </mo>  <mrow>  <mo> ( </mo>  <mrow>  <mi> a </mi>  <mo> , </mo>  <msub>  <mi> a </mi>  <mn> 2 </mn>  </msub>  <mo> , </mo>  <mo> … </mo>  <mo> , </mo>  <mrow>  <msub>  <mi> a </mi>  <mrow>  <mi> q </mi>  <mo> + </mo>  <mn> 1 </mn>  </mrow>  </msub>  <mo> ; </mo>  <mrow>  <msub>  <mi> a </mi>  <mn> 2 </mn>  </msub>  <mo> + </mo>  <msub>  <mi> n </mi>  <mn> 2 </mn>  </msub>  </mrow>  </mrow>  <mo> , </mo>  <mo> … </mo>  <mo> , </mo>  <mrow>  <mrow>  <msub>  <mi> a </mi>  <mrow>  <mi> q </mi>  <mo> + </mo>  <mn> 1 </mn>  </mrow>  </msub>  <mo> + </mo>  <msub>  <mi> n </mi>  <mrow>  <mi> q </mi>  <mo> + </mo>  <mn> 1 </mn>  </mrow>  </msub>  </mrow>  <mo> ; </mo>  <mn> 1 </mn>  </mrow>  </mrow>  <mo> ) </mo>  </mrow>  </mrow>  <annotation encoding='Mathematica'> TagBox[TagBox[RowBox[List[RowBox[List[SubscriptBox["\[InvisiblePrefixScriptBase]", FormBox[RowBox[List["q", "+", "1"]], TraditionalForm]], SubscriptBox[OverscriptBox["F", "~"], FormBox["q", TraditionalForm]]]], "\[InvisibleApplication]", RowBox[List["(", RowBox[List["a", ",", SubscriptBox["a", "2"], ",", "\[Ellipsis]", ",", RowBox[List[SubscriptBox["a", RowBox[List["q", "+", "1"]]], ";", RowBox[List[SubscriptBox["a", "2"], "+", SubscriptBox["n", "2"]]]]], ",", "\[Ellipsis]", ",", RowBox[List[RowBox[List[SubscriptBox["a", RowBox[List["q", "+", "1"]]], "+", SubscriptBox["n", RowBox[List["q", "+", "1"]]]]], ";", TagBox["1", HypergeometricPFQ, Rule[Editable, True]]]]]], ")"]]]], InterpretTemplate[Function[HypergeometricPFQ[Slot[1], Slot[2], Slot[3]]]], Rule[Editable, True]], HypergeometricPFQ] </annotation>  </semantics>  <mo> ⩵ </mo>  <mrow>  <mrow>  <mi> Γ </mi>  <mo> ⁡ </mo>  <mo> ( </mo>  <mrow>  <mn> 1 </mn>  <mo> - </mo>  <mi> a </mi>  </mrow>  <mo> ) </mo>  </mrow>  <mo> ⁢ </mo>  <mrow>  <munderover>  <mo> ∑ </mo>  <mrow>  <mi> k </mi>  <mo> = </mo>  <mn> 2 </mn>  </mrow>  <mrow>  <mi> q </mi>  <mo> + </mo>  <mn> 1 </mn>  </mrow>  </munderover>  <mrow>  <mfrac>  <mn> 1 </mn>  <mrow>  <mrow>  <mrow>  <mo> ( </mo>  <mrow>  <msub>  <mi> n </mi>  <mi> k </mi>  </msub>  <mo> - </mo>  <mn> 1 </mn>  </mrow>  <mo> ) </mo>  </mrow>  <mo> ! </mo>  </mrow>  <mo> ⁢ </mo>  <mrow>  <mi> Γ </mi>  <mo> ⁡ </mo>  <mo> ( </mo>  <mrow>  <msub>  <mi> a </mi>  <mi> k </mi>  </msub>  <mo> - </mo>  <mi> a </mi>  <mo> + </mo>  <mn> 1 </mn>  </mrow>  <mo> ) </mo>  </mrow>  </mrow>  </mfrac>  <mo> ⁢ </mo>  <mrow>  <munderover>  <mo> ∑ </mo>  <mrow>  <mi> j </mi>  <mo> = </mo>  <mn> 0 </mn>  </mrow>  <mrow>  <msub>  <mi> n </mi>  <mi> k </mi>  </msub>  <mo> - </mo>  <mn> 1 </mn>  </mrow>  </munderover>  <mrow>  <mfrac>  <mrow>  <semantics>  <msub>  <mrow>  <mo> ( </mo>  <mrow>  <mn> 1 </mn>  <mo> - </mo>  <msub>  <mi> n </mi>  <mi> k </mi>  </msub>  </mrow>  <mo> ) </mo>  </mrow>  <mi> j </mi>  </msub>  <annotation encoding='Mathematica'> TagBox[SubscriptBox[RowBox[List["(", RowBox[List["1", "-", SubscriptBox["n", "k"]]], ")"]], "j"], Pochhammer] </annotation>  </semantics>  <mo> ⁢ </mo>  <semantics>  <msub>  <mrow>  <mo> ( </mo>  <msub>  <mi> a </mi>  <mi> k </mi>  </msub>  <mo> ) </mo>  </mrow>  <mi> j </mi>  </msub>  <annotation encoding='Mathematica'> TagBox[SubscriptBox[RowBox[List["(", SubscriptBox["a", "k"], ")"]], "j"], Pochhammer] </annotation>  </semantics>  </mrow>  <mrow>  <mrow>  <mi> j </mi>  <mo> ! </mo>  </mrow>  <mo> ⁢ </mo>  <semantics>  <msub>  <mrow>  <mo> ( </mo>  <mrow>  <msub>  <mi> a </mi>  <mi> k </mi>  </msub>  <mo> - </mo>  <mi> a </mi>  <mo> + </mo>  <mn> 1 </mn>  </mrow>  <mo> ) </mo>  </mrow>  <mi> j </mi>  </msub>  <annotation encoding='Mathematica'> TagBox[SubscriptBox[RowBox[List["(", RowBox[List[SubscriptBox["a", "k"], "-", "a", "+", "1"]], ")"]], "j"], Pochhammer] </annotation>  </semantics>  </mrow>  </mfrac>  <mo> ⁢ </mo>  <mrow>  <munderover>  <mo> ∏ </mo>  <munder>  <mrow>  <mi> l </mi>  <mo> = </mo>  <mn> 2 </mn>  </mrow>  <mrow>  <mi> l </mi>  <mo> ≠ </mo>  <mi> k </mi>  </mrow>  </munder>  <mrow>  <mi> q </mi>  <mo> + </mo>  <mn> 1 </mn>  </mrow>  </munderover>  <mfrac>  <semantics>  <msub>  <mrow>  <mo> ( </mo>  <mrow>  <msub>  <mi> a </mi>  <mi> k </mi>  </msub>  <mo> - </mo>  <msub>  <mi> a </mi>  <mi> l </mi>  </msub>  <mo> - </mo>  <msub>  <mi> n </mi>  <mi> l </mi>  </msub>  <mo> + </mo>  <mn> 1 </mn>  </mrow>  <mo> ) </mo>  </mrow>  <mi> j </mi>  </msub>  <annotation encoding='Mathematica'> TagBox[SubscriptBox[RowBox[List["(", RowBox[List[SubscriptBox["a", "k"], "-", SubscriptBox["a", "l"], "-", SubscriptBox["n", "l"], "+", "1"]], ")"]], "j"], Pochhammer] </annotation>  </semantics>  <mrow>  <mrow>  <mi> Γ </mi>  <mo> ⁡ </mo>  <mo> ( </mo>  <msub>  <mi> a </mi>  <mi> l </mi>  </msub>  <mo> ) </mo>  </mrow>  <mo> ⁢ </mo>  <semantics>  <msub>  <mrow>  <mo> ( </mo>  <mrow>  <msub>  <mi> a </mi>  <mi> l </mi>  </msub>  <mo> - </mo>  <msub>  <mi> a </mi>  <mi> k </mi>  </msub>  </mrow>  <mo> ) </mo>  </mrow>  <msub>  <mi> n </mi>  <mi> l </mi>  </msub>  </msub>  <annotation encoding='Mathematica'> TagBox[SubscriptBox[RowBox[List["(", RowBox[List[SubscriptBox["a", "l"], "-", SubscriptBox["a", "k"]]], ")"]], SubscriptBox["n", "l"]], Pochhammer] </annotation>  </semantics>  <mo> ⁢ </mo>  <semantics>  <msub>  <mrow>  <mo> ( </mo>  <mrow>  <msub>  <mi> a </mi>  <mi> k </mi>  </msub>  <mo> - </mo>  <msub>  <mi> a </mi>  <mi> l </mi>  </msub>  <mo> + </mo>  <mn> 1 </mn>  </mrow>  <mo> ) </mo>  </mrow>  <mi> j </mi>  </msub>  <annotation encoding='Mathematica'> TagBox[SubscriptBox[RowBox[List["(", RowBox[List[SubscriptBox["a", "k"], "-", SubscriptBox["a", "l"], "+", "1"]], ")"]], "j"], Pochhammer] </annotation>  </semantics>  </mrow>  </mfrac>  </mrow>  </mrow>  </mrow>  </mrow>  </mrow>  </mrow>  </mrow>  <mo> /; </mo>  <mrow>  <mrow>  <mrow>  <mi> Re </mi>  <mo> ⁡ </mo>  <mo> ( </mo>  <mi> a </mi>  <mo> ) </mo>  </mrow>  <mo> < </mo>  <mrow>  <munderover>  <mo> ∑ </mo>  <mrow>  <mi> j </mi>  <mo> = </mo>  <mn> 2 </mn>  </mrow>  <mrow>  <mi> q </mi>  <mo> + </mo>  <mn> 1 </mn>  </mrow>  </munderover>  <msub>  <mi> n </mi>  <mi> j </mi>  </msub>  </mrow>  </mrow>  <mo> ∧ </mo>  <mrow>  <msub>  <mi> n </mi>  <mi> j </mi>  </msub>  <mo> ∈ </mo>  <msup>  <mi> ℕ </mi>  <mo> + </mo>  </msup>  </mrow>  <mo> ∧ </mo>  <mrow>  <mn> 2 </mn>  <mo> ≤ </mo>  <mi> j </mi>  <mo> ≤ </mo>  <mrow>  <mi> q </mi>  <mo> + </mo>  <mn> 1 </mn>  </mrow>  </mrow>  </mrow>  </mrow>  <annotation-xml encoding='MathML-Content'>  <mrow>  <mrow>  <semantics>  <mrow>  <mrow>  <msub>  <mo>   </mo>  <mrow>  <mi> q </mi>  <mo> + </mo>  <mn> 1 </mn>  </mrow>  </msub>  <msub>  <mover>  <mi> F </mi>  <mo> ~ </mo>  </mover>  <mi> q </mi>  </msub>  </mrow>  <mo> ⁡ </mo>  <mrow>  <mo> ( </mo>  <mrow>  <mi> a </mi>  <mo> , </mo>  <msub>  <mi> a </mi>  <mn> 2 </mn>  </msub>  <mo> , </mo>  <mo> … </mo>  <mo> , </mo>  <mrow>  <msub>  <mi> a </mi>  <mrow>  <mi> q </mi>  <mo> + </mo>  <mn> 1 </mn>  </mrow>  </msub>  <mo> ; </mo>  <mrow>  <msub>  <mi> a </mi>  <mn> 2 </mn>  </msub>  <mo> + </mo>  <msub>  <mi> n </mi>  <mn> 2 </mn>  </msub>  </mrow>  </mrow>  <mo> , </mo>  <mo> … </mo>  <mo> , </mo>  <mrow>  <mrow>  <msub>  <mi> a </mi>  <mrow>  <mi> q </mi>  <mo> + </mo>  <mn> 1 </mn>  </mrow>  </msub>  <mo> + </mo>  <msub>  <mi> n </mi>  <mrow>  <mi> q </mi>  <mo> + </mo>  <mn> 1 </mn>  </mrow>  </msub>  </mrow>  <mo> ; </mo>  <mn> 1 </mn>  </mrow>  </mrow>  <mo> ) </mo>  </mrow>  </mrow>  <annotation encoding='Mathematica'> TagBox[TagBox[RowBox[List[RowBox[List[SubscriptBox["\[InvisiblePrefixScriptBase]", FormBox[RowBox[List["q", "+", "1"]], TraditionalForm]], SubscriptBox[OverscriptBox["F", "~"], FormBox["q", TraditionalForm]]]], "\[InvisibleApplication]", RowBox[List["(", RowBox[List["a", ",", SubscriptBox["a", "2"], ",", "\[Ellipsis]", ",", RowBox[List[SubscriptBox["a", RowBox[List["q", "+", "1"]]], ";", RowBox[List[SubscriptBox["a", "2"], "+", SubscriptBox["n", "2"]]]]], ",", "\[Ellipsis]", ",", RowBox[List[RowBox[List[SubscriptBox["a", RowBox[List["q", "+", "1"]]], "+", SubscriptBox["n", RowBox[List["q", "+", "1"]]]]], ";", TagBox["1", HypergeometricPFQ, Rule[Editable, True]]]]]], ")"]]]], InterpretTemplate[Function[HypergeometricPFQ[Slot[1], Slot[2], Slot[3]]]], Rule[Editable, True]], HypergeometricPFQ] </annotation>  </semantics>  <mo> ⩵ </mo>  <mrow>  <mrow>  <mi> Γ </mi>  <mo> ⁡ </mo>  <mo> ( </mo>  <mrow>  <mn> 1 </mn>  <mo> - </mo>  <mi> a </mi>  </mrow>  <mo> ) </mo>  </mrow>  <mo> ⁢ </mo>  <mrow>  <munderover>  <mo> ∑ </mo>  <mrow>  <mi> k </mi>  <mo> = </mo>  <mn> 2 </mn>  </mrow>  <mrow>  <mi> q </mi>  <mo> + </mo>  <mn> 1 </mn>  </mrow>  </munderover>  <mrow>  <mfrac>  <mn> 1 </mn>  <mrow>  <mrow>  <mrow>  <mo> ( </mo>  <mrow>  <msub>  <mi> n </mi>  <mi> k </mi>  </msub>  <mo> - </mo>  <mn> 1 </mn>  </mrow>  <mo> ) </mo>  </mrow>  <mo> ! </mo>  </mrow>  <mo> ⁢ </mo>  <mrow>  <mi> Γ </mi>  <mo> ⁡ </mo>  <mo> ( </mo>  <mrow>  <msub>  <mi> a </mi>  <mi> k </mi>  </msub>  <mo> - </mo>  <mi> a </mi>  <mo> + </mo>  <mn> 1 </mn>  </mrow>  <mo> ) </mo>  </mrow>  </mrow>  </mfrac>  <mo> ⁢ </mo>  <mrow>  <munderover>  <mo> ∑ </mo>  <mrow>  <mi> j </mi>  <mo> = </mo>  <mn> 0 </mn>  </mrow>  <mrow>  <msub>  <mi> n </mi>  <mi> k </mi>  </msub>  <mo> - </mo>  <mn> 1 </mn>  </mrow>  </munderover>  <mrow>  <mfrac>  <mrow>  <semantics>  <msub>  <mrow>  <mo> ( </mo>  <mrow>  <mn> 1 </mn>  <mo> - </mo>  <msub>  <mi> n </mi>  <mi> k </mi>  </msub>  </mrow>  <mo> ) </mo>  </mrow>  <mi> j </mi>  </msub>  <annotation encoding='Mathematica'> TagBox[SubscriptBox[RowBox[List["(", RowBox[List["1", "-", SubscriptBox["n", "k"]]], ")"]], "j"], Pochhammer] </annotation>  </semantics>  <mo> ⁢ </mo>  <semantics>  <msub>  <mrow>  <mo> ( </mo>  <msub>  <mi> a </mi>  <mi> k </mi>  </msub>  <mo> ) </mo>  </mrow>  <mi> j </mi>  </msub>  <annotation encoding='Mathematica'> TagBox[SubscriptBox[RowBox[List["(", SubscriptBox["a", "k"], ")"]], "j"], Pochhammer] </annotation>  </semantics>  </mrow>  <mrow>  <mrow>  <mi> j </mi>  <mo> ! </mo>  </mrow>  <mo> ⁢ </mo>  <semantics>  <msub>  <mrow>  <mo> ( </mo>  <mrow>  <msub>  <mi> a </mi>  <mi> k </mi>  </msub>  <mo> - </mo>  <mi> a </mi>  <mo> + </mo>  <mn> 1 </mn>  </mrow>  <mo> ) </mo>  </mrow>  <mi> j </mi>  </msub>  <annotation encoding='Mathematica'> TagBox[SubscriptBox[RowBox[List["(", RowBox[List[SubscriptBox["a", "k"], "-", "a", "+", "1"]], ")"]], "j"], Pochhammer] </annotation>  </semantics>  </mrow>  </mfrac>  <mo> ⁢ </mo>  <mrow>  <munderover>  <mo> ∏ </mo>  <munder>  <mrow>  <mi> l </mi>  <mo> = </mo>  <mn> 2 </mn>  </mrow>  <mrow>  <mi> l </mi>  <mo> ≠ </mo>  <mi> k </mi>  </mrow>  </munder>  <mrow>  <mi> q </mi>  <mo> + </mo>  <mn> 1 </mn>  </mrow>  </munderover>  <mfrac>  <semantics>  <msub>  <mrow>  <mo> ( </mo>  <mrow>  <msub>  <mi> a </mi>  <mi> k </mi>  </msub>  <mo> - </mo>  <msub>  <mi> a </mi>  <mi> l </mi>  </msub>  <mo> - </mo>  <msub>  <mi> n </mi>  <mi> l </mi>  </msub>  <mo> + </mo>  <mn> 1 </mn>  </mrow>  <mo> ) </mo>  </mrow>  <mi> j </mi>  </msub>  <annotation encoding='Mathematica'> TagBox[SubscriptBox[RowBox[List["(", RowBox[List[SubscriptBox["a", "k"], "-", SubscriptBox["a", "l"], "-", SubscriptBox["n", "l"], "+", "1"]], ")"]], "j"], Pochhammer] </annotation>  </semantics>  <mrow>  <mrow>  <mi> Γ </mi>  <mo> ⁡ </mo>  <mo> ( </mo>  <msub>  <mi> a </mi>  <mi> l </mi>  </msub>  <mo> ) </mo>  </mrow>  <mo> ⁢ </mo>  <semantics>  <msub>  <mrow>  <mo> ( </mo>  <mrow>  <msub>  <mi> a </mi>  <mi> l </mi>  </msub>  <mo> - </mo>  <msub>  <mi> a </mi>  <mi> k </mi>  </msub>  </mrow>  <mo> ) </mo>  </mrow>  <msub>  <mi> n </mi>  <mi> l </mi>  </msub>  </msub>  <annotation encoding='Mathematica'> TagBox[SubscriptBox[RowBox[List["(", RowBox[List[SubscriptBox["a", "l"], "-", SubscriptBox["a", "k"]]], ")"]], SubscriptBox["n", "l"]], Pochhammer] </annotation>  </semantics>  <mo> ⁢ </mo>  <semantics>  <msub>  <mrow>  <mo> ( </mo>  <mrow>  <msub>  <mi> a </mi>  <mi> k </mi>  </msub>  <mo> - </mo>  <msub>  <mi> a </mi>  <mi> l </mi>  </msub>  <mo> + </mo>  <mn> 1 </mn>  </mrow>  <mo> ) </mo>  </mrow>  <mi> j </mi>  </msub>  <annotation encoding='Mathematica'> TagBox[SubscriptBox[RowBox[List["(", RowBox[List[SubscriptBox["a", "k"], "-", SubscriptBox["a", "l"], "+", "1"]], ")"]], "j"], Pochhammer] </annotation>  </semantics>  </mrow>  </mfrac>  </mrow>  </mrow>  </mrow>  </mrow>  </mrow>  </mrow>  </mrow>  <mo> /; </mo>  <mrow>  <mrow>  <mrow>  <mi> Re </mi>  <mo> ⁡ </mo>  <mo> ( </mo>  <mi> a </mi>  <mo> ) </mo>  </mrow>  <mo> < </mo>  <mrow>  <munderover>  <mo> ∑ </mo>  <mrow>  <mi> j </mi>  <mo> = </mo>  <mn> 2 </mn>  </mrow>  <mrow>  <mi> q </mi>  <mo> + </mo>  <mn> 1 </mn>  </mrow>  </munderover>  <msub>  <mi> n </mi>  <mi> j </mi>  </msub>  </mrow>  </mrow>  <mo> ∧ </mo>  <mrow>  <msub>  <mi> n </mi>  <mi> j </mi>  </msub>  <mo> ∈ </mo>  <msup>  <mi> ℕ </mi>  <mo> + </mo>  </msup>  </mrow>  <mo> ∧ </mo>  <mrow>  <mn> 2 </mn>  <mo> ≤ </mo>  <mi> j </mi>  <mo> ≤ </mo>  <mrow>  <mi> q </mi>  <mo> + </mo>  <mn> 1 </mn>  </mrow>  </mrow>  </mrow>  </mrow>  </annotation-xml>  </semantics>  </math> 
   
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