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 | | http://functions.wolfram.com/06.18.06.0004.01 | 
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 | | Beta[a, b] == 
  1/b - (a - 1) Sum[(-1)^j HypergeometricPFQ[{2 - a, Subscript[a, 1], 
        Subscript[a, 2], \[Ellipsis], Subscript[a, j + 2]}, 
       {1 + Subscript[a, 1], 1 + Subscript[a, 2], \[Ellipsis], 
        1 + Subscript[a, j + 2]}, 1] b^j, {j, 0, Infinity}] /; 
 Subscript[a, 1] == Subscript[a, 2] == \[Ellipsis] == Subscript[a, j + 2] == 
   1 && Abs[b] < 1 && Re[a] > 0 | 
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 | | Cell[BoxData[RowBox[List[RowBox[List[RowBox[List["Beta", "[", RowBox[List["a", ",", "b"]], "]"]], "\[Equal]", RowBox[List[FractionBox["1", "b"], "-", RowBox[List[RowBox[List["(", RowBox[List["a", "-", "1"]], ")"]], RowBox[List[UnderoverscriptBox["\[Sum]", RowBox[List["j", "=", "0"]], "\[Infinity]"], RowBox[List[SuperscriptBox[RowBox[List["(", RowBox[List["-", "1"]], ")"]], "j"], RowBox[List["HypergeometricPFQ", "[", RowBox[List[RowBox[List["{", RowBox[List[RowBox[List["2", "-", "a"]], ",", SubscriptBox["a", "1"], ",", SubscriptBox["a", "2"], ",", "\[Ellipsis]", ",", SubscriptBox["a", RowBox[List["j", "+", "2"]]]]], "}"]], ",", RowBox[List["{", RowBox[List[RowBox[List["1", "+", SubscriptBox["a", "1"]]], ",", RowBox[List["1", "+", SubscriptBox["a", "2"]]], ",", "\[Ellipsis]", ",", RowBox[List["1", "+", SubscriptBox["a", RowBox[List["j", "+", "2"]]]]]]], "}"]], ",", "1"]], "]"]], SuperscriptBox["b", "j"]]]]]]]]]]], "/;", RowBox[List[RowBox[List[SubscriptBox["a", "1"], "\[Equal]", SubscriptBox["a", "2"], "\[Equal]", "\[Ellipsis]", "\[Equal]", SubscriptBox["a", RowBox[List["j", "+", "2"]]], "\[Equal]", "1"]], "\[And]", RowBox[List[RowBox[List["Abs", "[", "b", "]"]], "<", "1"]], "\[And]", RowBox[List[RowBox[List["Re", "[", "a", "]"]], ">", "0"]]]]]]]] | 
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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>  <semantics>  <mi> Β </mi>  <annotation-xml encoding='MathML-Content'>  <ci> Beta </ci>  </annotation-xml>  </semantics>  <mo> ( </mo>  <mrow>  <mi> a </mi>  <mo> , </mo>  <mi> b </mi>  </mrow>  <mo> ) </mo>  </mrow>  <mo> ⩵ </mo>  <mrow>  <mfrac>  <mn> 1 </mn>  <mi> b </mi>  </mfrac>  <mo> - </mo>  <mrow>  <mrow>  <mo> ( </mo>  <mrow>  <mi> a </mi>  <mo> - </mo>  <mn> 1 </mn>  </mrow>  <mo> ) </mo>  </mrow>  <mo> ⁢ </mo>  <mrow>  <munderover>  <mo> ∑ </mo>  <mrow>  <mi> j </mi>  <mo> = </mo>  <mn> 0 </mn>  </mrow>  <mi> ∞ </mi>  </munderover>  <mrow>  <msup>  <mrow>  <mo> ( </mo>  <mrow>  <mo> - </mo>  <mn> 1 </mn>  </mrow>  <mo> ) </mo>  </mrow>  <mi> j </mi>  </msup>  <mo> ⁢ </mo>  <semantics>  <mrow>  <mrow>  <msub>  <mo>   </mo>  <mrow>  <mi> j </mi>  <mo> + </mo>  <mn> 3 </mn>  </mrow>  </msub>  <msub>  <mi> F </mi>  <mrow>  <mi> j </mi>  <mo> + </mo>  <mn> 2 </mn>  </mrow>  </msub>  </mrow>  <mo> ⁡ </mo>  <mrow>  <mo> ( </mo>  <mrow>  <mrow>  <mrow>  <mn> 2 </mn>  <mo> - </mo>  <mi> a </mi>  </mrow>  <mo> , </mo>  <msub>  <mi> a </mi>  <mn> 1 </mn>  </msub>  <mo> , </mo>  <msub>  <mi> a </mi>  <mn> 2 </mn>  </msub>  <mo> , </mo>  <mo> … </mo>  <mo> , </mo>  <msub>  <mi> a </mi>  <mrow>  <mi> j </mi>  <mo> + </mo>  <mn> 2 </mn>  </mrow>  </msub>  </mrow>  <mo> ; </mo>  <mrow>  <mrow>  <msub>  <mi> a </mi>  <mn> 1 </mn>  </msub>  <mo> + </mo>  <mn> 1 </mn>  </mrow>  <mo> , </mo>  <mrow>  <msub>  <mi> a </mi>  <mn> 2 </mn>  </msub>  <mo> + </mo>  <mn> 1 </mn>  </mrow>  <mo> , </mo>  <mo> … </mo>  <mo> , </mo>  <mrow>  <msub>  <mi> a </mi>  <mrow>  <mi> j </mi>  <mo> + </mo>  <mn> 2 </mn>  </mrow>  </msub>  <mo> + </mo>  <mn> 1 </mn>  </mrow>  </mrow>  <mo> ; </mo>  <mn> 1 </mn>  </mrow>  <mo> ) </mo>  </mrow>  </mrow>  <annotation encoding='Mathematica'> TagBox[TagBox[RowBox[List[RowBox[List[SubscriptBox["\[InvisiblePrefixScriptBase]", RowBox[List["j", "+", "3"]]], SubscriptBox["F", RowBox[List["j", "+", "2"]]]]], "\[InvisibleApplication]", RowBox[List["(", RowBox[List[TagBox[TagBox[RowBox[List[TagBox[RowBox[List["2", "-", "a"]], HypergeometricPFQ, Rule[Editable, True]], ",", TagBox[SubscriptBox["a", "1"], HypergeometricPFQ, Rule[Editable, True]], ",", TagBox[SubscriptBox["a", "2"], HypergeometricPFQ, Rule[Editable, True]], ",", TagBox["\[Ellipsis]", HypergeometricPFQ, Rule[Editable, True]], ",", TagBox[SubscriptBox["a", RowBox[List["j", "+", "2"]]], HypergeometricPFQ, Rule[Editable, True]]]], InterpretTemplate[Function[List[SlotSequence[1]]]]], HypergeometricPFQ, Rule[Editable, True]], ";", TagBox[TagBox[RowBox[List[TagBox[RowBox[List[SubscriptBox["a", "1"], "+", "1"]], HypergeometricPFQ, Rule[Editable, True]], ",", TagBox[RowBox[List[SubscriptBox["a", "2"], "+", "1"]], HypergeometricPFQ, Rule[Editable, True]], ",", TagBox["\[Ellipsis]", HypergeometricPFQ, Rule[Editable, True]], ",", TagBox[RowBox[List[SubscriptBox["a", RowBox[List["j", "+", "2"]]], "+", "1"]], HypergeometricPFQ, Rule[Editable, True]]]], InterpretTemplate[Function[List[SlotSequence[1]]]]], HypergeometricPFQ, Rule[Editable, True]], ";", TagBox["1", HypergeometricPFQ, Rule[Editable, True]]]], ")"]]]], InterpretTemplate[Function[HypergeometricPFQ[Slot[1], Slot[2], Slot[3]]]], Rule[Editable, True]], HypergeometricPFQ] </annotation>  </semantics>  <mo> ⁢ </mo>  <msup>  <mi> b </mi>  <mi> j </mi>  </msup>  </mrow>  </mrow>  </mrow>  </mrow>  </mrow>  <mo> /; </mo>  <mrow>  <mrow>  <msub>  <mi> a </mi>  <mn> 1 </mn>  </msub>  <mo> ⩵ </mo>  <msub>  <mi> a </mi>  <mn> 2 </mn>  </msub>  <mo> ⩵ </mo>  <mo> … </mo>  <mo> ⩵ </mo>  <msub>  <mi> a </mi>  <mrow>  <mi> j </mi>  <mo> + </mo>  <mn> 2 </mn>  </mrow>  </msub>  <mo> ⩵ </mo>  <mn> 1 </mn>  </mrow>  <mo> ∧ </mo>  <mrow>  <mrow>  <semantics>  <mo> ❘ </mo>  <annotation encoding='Mathematica'> "\[LeftBracketingBar]" </annotation>  </semantics>  <mi> b </mi>  <semantics>  <mo> ❘ </mo>  <annotation encoding='Mathematica'> "\[RightBracketingBar]" </annotation>  </semantics>  </mrow>  <mo> < </mo>  <mn> 1 </mn>  </mrow>  <mo> ∧ </mo>  <mrow>  <mrow>  <mi> Re </mi>  <mo> ⁡ </mo>  <mo> ( </mo>  <mi> a </mi>  <mo> ) </mo>  </mrow>  <mo> > </mo>  <mn> 0 </mn>  </mrow>  </mrow>  </mrow>  <annotation-xml encoding='MathML-Content'>  <apply>  <ci> Condition </ci>  <apply>  <eq />  <apply>  <ci> Beta </ci>  <ci> a </ci>  <ci> b </ci>  </apply>  <apply>  <plus />  <apply>  <times />  <cn type='integer'> 1 </cn>  <apply>  <power />  <ci> b </ci>  <cn type='integer'> -1 </cn>  </apply>  </apply>  <apply>  <times />  <cn type='integer'> -1 </cn>  <apply>  <times />  <apply>  <plus />  <ci> a </ci>  <cn type='integer'> -1 </cn>  </apply>  <apply>  <sum />  <bvar>  <ci> j </ci>  </bvar>  <lowlimit>  <cn type='integer'> 0 </cn>  </lowlimit>  <uplimit>  <infinity />  </uplimit>  <apply>  <times />  <apply>  <power />  <cn type='integer'> -1 </cn>  <ci> j </ci>  </apply>  <apply>  <ci> HypergeometricPFQ </ci>  <list>  <apply>  <plus />  <cn type='integer'> 2 </cn>  <apply>  <times />  <cn type='integer'> -1 </cn>  <ci> a </ci>  </apply>  </apply>  <apply>  <ci> Subscript </ci>  <ci> a </ci>  <cn type='integer'> 1 </cn>  </apply>  <apply>  <ci> Subscript </ci>  <ci> a </ci>  <cn type='integer'> 2 </cn>  </apply>  <ci> … </ci>  <apply>  <ci> Subscript </ci>  <ci> a </ci>  <apply>  <plus />  <ci> j </ci>  <cn type='integer'> 2 </cn>  </apply>  </apply>  </list>  <list>  <apply>  <plus />  <apply>  <ci> Subscript </ci>  <ci> a </ci>  <cn type='integer'> 1 </cn>  </apply>  <cn type='integer'> 1 </cn>  </apply>  <apply>  <plus />  <apply>  <ci> Subscript </ci>  <ci> a </ci>  <cn type='integer'> 2 </cn>  </apply>  <cn type='integer'> 1 </cn>  </apply>  <ci> … </ci>  <apply>  <plus />  <apply>  <ci> Subscript </ci>  <ci> a </ci>  <apply>  <plus />  <ci> j </ci>  <cn type='integer'> 2 </cn>  </apply>  </apply>  <cn type='integer'> 1 </cn>  </apply>  </list>  <cn type='integer'> 1 </cn>  </apply>  <apply>  <power />  <ci> b </ci>  <ci> j </ci>  </apply>  </apply>  </apply>  </apply>  </apply>  </apply>  </apply>  <apply>  <and />  <apply>  <eq />  <apply>  <ci> Subscript </ci>  <ci> a </ci>  <cn type='integer'> 1 </cn>  </apply>  <apply>  <ci> Subscript </ci>  <ci> a </ci>  <cn type='integer'> 2 </cn>  </apply>  <ci> … </ci>  <apply>  <ci> Subscript </ci>  <ci> a </ci>  <apply>  <plus />  <ci> j </ci>  <cn type='integer'> 2 </cn>  </apply>  </apply>  <cn type='integer'> 1 </cn>  </apply>  <apply>  <lt />  <apply>  <abs />  <ci> b </ci>  </apply>  <cn type='integer'> 1 </cn>  </apply>  <apply>  <gt />  <apply>  <real />  <ci> a </ci>  </apply>  <cn type='integer'> 0 </cn>  </apply>  </apply>  </apply>  </annotation-xml>  </semantics>  </math> 
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 | | Cell[BoxData[RowBox[List[RowBox[List["HoldPattern", "[", RowBox[List["Beta", "[", RowBox[List["a_", ",", "b_"]], "]"]], "]"]], "\[RuleDelayed]", RowBox[List[RowBox[List[FractionBox["1", "b"], "-", RowBox[List[RowBox[List["(", RowBox[List["a", "-", "1"]], ")"]], " ", RowBox[List[UnderoverscriptBox["\[Sum]", RowBox[List["j", "=", "0"]], "\[Infinity]"], RowBox[List[SuperscriptBox[RowBox[List["(", RowBox[List["-", "1"]], ")"]], "j"], " ", RowBox[List["HypergeometricPFQ", "[", RowBox[List[RowBox[List["Join", "[", RowBox[List[RowBox[List["{", RowBox[List[RowBox[List["2", "-", "a"]], ",", "1"]], "}"]], ",", RowBox[List["Table", "[", RowBox[List["1", ",", RowBox[List["{", RowBox[List["K$1", ",", "2", ",", RowBox[List["2", "+", "j"]]]], "}"]]]], "]"]]]], "]"]], ",", RowBox[List["Join", "[", RowBox[List[RowBox[List["{", "2", "}"]], ",", RowBox[List["Table", "[", RowBox[List["2", ",", RowBox[List["{", RowBox[List["K$1", ",", "2", ",", RowBox[List["2", "+", "j"]]]], "}"]]]], "]"]]]], "]"]], ",", "1"]], "]"]], " ", SuperscriptBox["b", "j"]]]]]]]]], "/;", RowBox[List[RowBox[List[RowBox[List["Abs", "[", "b", "]"]], "<", "1"]], "&&", RowBox[List[RowBox[List["Re", "[", "a", "]"]], ">", "0"]]]]]]]]]] | 
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 | | Date Added to functions.wolfram.com (modification date) | 
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