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http://functions.wolfram.com/06.11.25.0001.01
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Limit[LogGamma[x + I \[Epsilon]] - Log[Gamma[x + I \[Epsilon]]],
\[Epsilon] -> 0] == -2 Pi I k /; Element[x, Reals] &&
Subscript[z, 2 k - 1] < x < Subscript[z, 2 k + 1] &&
PolyGamma[Subscript[z, k]] == 0 && 1.4 < Subscript[z, 0] < 1.5 &&
-0.6 < Subscript[z, 1] < -0.5 && -1.6 < Subscript[z, 2] < -1.5 &&
-2.7 < Subscript[z, 3] < -2.6 && -3.7 < Subscript[z, 4] < -3.6 &&
-4.7 < Subscript[z, 5] < -4.6 && -5.7 < Subscript[z, 6] < -5.6 &&
-6.7 < Subscript[z, 7] < -6.6 && \[Ellipsis] && Element[k, Integers] &&
k > 0
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Cell[BoxData[RowBox[List[RowBox[List[RowBox[List["Limit", "[", RowBox[List[RowBox[List[RowBox[List["LogGamma", "[", RowBox[List["x", "+", RowBox[List["\[ImaginaryI]", " ", "\[Epsilon]"]]]], "]"]], "-", RowBox[List["Log", "[", RowBox[List["Gamma", "[", RowBox[List["x", "+", RowBox[List["\[ImaginaryI]", " ", "\[Epsilon]"]]]], "]"]], "]"]]]], ",", RowBox[List["\[Epsilon]", "\[Rule]", "0"]]]], "]"]], "\[Equal]", RowBox[List[RowBox[List["-", "2"]], " ", "\[Pi]", " ", "\[ImaginaryI]", " ", "k"]]]], "/;", RowBox[List[RowBox[List["x", "\[Element]", "Reals"]], "\[And]", RowBox[List[SubscriptBox["z", RowBox[List[RowBox[List["2", "k"]], "-", "1"]]], "<", "x", "<", SubscriptBox["z", RowBox[List[RowBox[List["2", "k"]], "+", "1"]]]]], "\[And]", RowBox[List[RowBox[List["PolyGamma", "[", SubscriptBox["z", "k"], "]"]], "\[Equal]", "0"]], "\[And]", RowBox[List["1.4", "<", SubscriptBox["z", "0"], "<", "1.5"]], "\[And]", RowBox[List[RowBox[List["-", "0.6"]], "<", SubscriptBox["z", "1"], "<", RowBox[List["-", "0.5"]]]], "\[And]", RowBox[List[RowBox[List["-", "1.6"]], "<", SubscriptBox["z", "2"], "<", RowBox[List["-", "1.5"]]]], "\[And]", RowBox[List[RowBox[List["-", "2.7"]], "<", SubscriptBox["z", "3"], "<", RowBox[List["-", "2.6"]]]], "\[And]", RowBox[List[RowBox[List["-", "3.7"]], "<", SubscriptBox["z", "4"], "<", RowBox[List["-", "3.6"]]]], "\[And]", RowBox[List[RowBox[List["-", "4.7"]], "<", SubscriptBox["z", "5"], "<", RowBox[List["-", "4.6"]]]], "\[And]", RowBox[List[RowBox[List["-", "5.7"]], "<", SubscriptBox["z", "6"], "<", RowBox[List["-", "5.6"]]]], "\[And]", RowBox[List[RowBox[List["-", "6.7"]], "<", SubscriptBox["z", "7"], "<", RowBox[List["-", "6.6"]]]], "\[And]", "\[Ellipsis]", "\[And]", RowBox[List["k", "\[Element]", "Integers"]], "\[And]", RowBox[List["k", ">", "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> <munder> <mi> lim </mi> <mrow> <mi> ϵ </mi> <semantics> <mo> → </mo> <annotation encoding='Mathematica'> "\[Rule]" </annotation> </semantics> <mn> 0 </mn> </mrow> </munder> <mo> ⁢ </mo> <mtext>   </mtext> <mrow> <mo> ( </mo> <mrow> <mrow> <mi> logΓ </mi> <mo> ⁡ </mo> <mo> ( </mo> <mrow> <mi> x </mi> <mo> + </mo> <mrow> <mi> ⅈ </mi> <mo> ⁢ </mo> <mi> ϵ </mi> </mrow> </mrow> <mo> ) </mo> </mrow> <mo> - </mo> <mrow> <mi> log </mi> <mo> ⁡ </mo> <mo> ( </mo> <mrow> <mi> Γ </mi> <mo> ⁡ </mo> <mo> ( </mo> <mrow> <mi> x </mi> <mo> + </mo> <mrow> <mi> ⅈ </mi> <mo> ⁢ </mo> <mi> ϵ </mi> </mrow> </mrow> <mo> ) </mo> </mrow> <mo> ) </mo> </mrow> </mrow> <mo> ) </mo> </mrow> </mrow> <mo>  </mo> <mrow> <mrow> <mo> - </mo> <mn> 2 </mn> </mrow> <mo> ⁢ </mo> <mi> π </mi> <mo> ⁢ </mo> <mi> ⅈ </mi> <mo> ⁢ </mo> <mi> k </mi> </mrow> </mrow> <mo> /; </mo> <mrow> <mrow> <mi> x </mi> <mo> ∈ </mo> <semantics> <mi> ℝ </mi> <annotation encoding='Mathematica'> TagBox["\[DoubleStruckCapitalR]", Function[List[], Reals]] </annotation> </semantics> </mrow> <mo> ∧ </mo> <mrow> <msub> <mi> z </mi> <mrow> <mrow> <mn> 2 </mn> <mo> ⁢ </mo> <mi> k </mi> </mrow> <mo> - </mo> <mn> 1 </mn> </mrow> </msub> <mo> < </mo> <mi> x </mi> <mo> < </mo> <msub> <mi> z </mi> <mrow> <mrow> <mn> 2 </mn> <mo> ⁢ </mo> <mi> k </mi> </mrow> <mo> + </mo> <mn> 1 </mn> </mrow> </msub> </mrow> <mo> ∧ </mo> <mrow> <mrow> <semantics> <mi> ψ </mi> <annotation encoding='Mathematica'> TagBox["\[Psi]", PolyGamma] </annotation> </semantics> <mo> ( </mo> <msub> <mi> z </mi> <mi> k </mi> </msub> <mo> ) </mo> </mrow> <mo>  </mo> <mn> 0 </mn> </mrow> <mo> ∧ </mo> <mrow> <mn> 1.4 </mn> <mo> < </mo> <msub> <mi> z </mi> <mn> 0 </mn> </msub> <mo> < </mo> <mn> 1.5 </mn> </mrow> <mo> ∧ </mo> <mrow> <mrow> <mo> - </mo> <mn> 0.6 </mn> </mrow> <mo> < </mo> <msub> <mi> z </mi> <mn> 1 </mn> </msub> <mo> < </mo> <mrow> <mo> - </mo> <mn> 0.5 </mn> </mrow> </mrow> <mo> ∧ </mo> <mrow> <mrow> <mo> - </mo> <mn> 1.6 </mn> </mrow> <mo> < </mo> <msub> <mi> z </mi> <mn> 2 </mn> </msub> <mo> < </mo> <mrow> <mo> - </mo> <mn> 1.5 </mn> </mrow> </mrow> <mo> ∧ </mo> <mrow> <mrow> <mo> - </mo> <mn> 2.7 </mn> </mrow> <mo> < </mo> <msub> <mi> z </mi> <mn> 3 </mn> </msub> <mo> < </mo> <mrow> <mo> - </mo> <mn> 2.6 </mn> </mrow> </mrow> <mo> ∧ </mo> <mrow> <mrow> <mo> - </mo> <mn> 3.7 </mn> </mrow> <mo> < </mo> <msub> <mi> z </mi> <mn> 4 </mn> </msub> <mo> < </mo> <mrow> <mo> - </mo> <mn> 3.6 </mn> </mrow> </mrow> <mo> ∧ </mo> <mrow> <mrow> <mo> - </mo> <mn> 4.7 </mn> </mrow> <mo> < </mo> <msub> <mi> z </mi> <mn> 5 </mn> </msub> <mo> < </mo> <mrow> <mo> - </mo> <mn> 4.6 </mn> </mrow> </mrow> <mo> ∧ </mo> <mrow> <mrow> <mo> - </mo> <mn> 5.7 </mn> </mrow> <mo> < </mo> <msub> <mi> z </mi> <mn> 6 </mn> </msub> <mo> < </mo> <mrow> <mo> - </mo> <mn> 5.6 </mn> </mrow> </mrow> <mo> ∧ </mo> <mrow> <mrow> <mo> - </mo> <mn> 6.7 </mn> </mrow> <mo> < </mo> <msub> <mi> z </mi> <mn> 7 </mn> </msub> <mo> < </mo> <mrow> <mo> - </mo> <mn> 6.6 </mn> </mrow> </mrow> <mo> ∧ </mo> <mo> … </mo> <mo> ∧ </mo> <mrow> <mi> k </mi> <mo> ∈ </mo> <msup> <semantics> <mi> ℕ </mi> <annotation encoding='Mathematica'> TagBox["\[DoubleStruckCapitalN]", Function[List[], Integers]] </annotation> </semantics> <mo> + </mo> </msup> </mrow> </mrow> </mrow> <annotation-xml encoding='MathML-Content'> <apply> <ci> Condition </ci> <apply> <eq /> <apply> <limit /> <bvar> <ci> ϵ </ci> </bvar> <condition> <apply> <tendsto /> <ci> ϵ </ci> <cn type='integer'> 0 </cn> </apply> </condition> <apply> <plus /> <apply> <ci> LogGamma </ci> <apply> <plus /> <ci> x </ci> <apply> <times /> <imaginaryi /> <ci> ϵ </ci> </apply> </apply> </apply> <apply> <times /> <cn type='integer'> -1 </cn> <apply> <ln /> <apply> <ci> Gamma </ci> <apply> <plus /> <ci> x </ci> <apply> <times /> <imaginaryi /> <ci> ϵ </ci> </apply> </apply> </apply> </apply> </apply> </apply> </apply> <apply> <times /> <cn type='integer'> -2 </cn> <pi /> <imaginaryi /> <ci> k </ci> </apply> </apply> <apply> <and /> <apply> <in /> <ci> x </ci> <reals /> </apply> <apply> <lt /> <apply> <ci> Subscript </ci> <ci> z </ci> <apply> <plus /> <apply> <times /> <cn type='integer'> 2 </cn> <ci> k </ci> </apply> <cn type='integer'> -1 </cn> </apply> </apply> <ci> x </ci> <apply> <ci> Subscript </ci> <ci> z </ci> <apply> <plus /> <apply> <times /> <cn type='integer'> 2 </cn> <ci> k </ci> </apply> <cn type='integer'> 1 </cn> </apply> </apply> </apply> <apply> <eq /> <apply> <ci> PolyGamma </ci> <apply> <ci> Subscript </ci> <ci> z </ci> <ci> k </ci> </apply> </apply> <cn type='integer'> 0 </cn> </apply> <apply> <lt /> <cn type='real'> 1.4 </cn> <apply> <ci> Subscript </ci> <ci> z </ci> <cn type='integer'> 0 </cn> </apply> <cn type='real'> 1.5 </cn> </apply> <apply> <lt /> <cn type='real'> -0.6 </cn> <apply> <ci> Subscript </ci> <ci> z </ci> <cn type='integer'> 1 </cn> </apply> <cn type='real'> -0.5 </cn> </apply> <apply> <lt /> <cn type='real'> -1.6 </cn> <apply> <ci> Subscript </ci> <ci> z </ci> <cn type='integer'> 2 </cn> </apply> <cn type='real'> -1.5 </cn> </apply> <apply> <lt /> <cn type='real'> -2.7 </cn> <apply> <ci> Subscript </ci> <ci> z </ci> <cn type='integer'> 3 </cn> </apply> <cn type='real'> -2.6 </cn> </apply> <apply> <lt /> <cn type='real'> -3.7 </cn> <apply> <ci> Subscript </ci> <ci> z </ci> <cn type='integer'> 4 </cn> </apply> <cn type='real'> -3.6 </cn> </apply> <apply> <lt /> <cn type='real'> -4.7 </cn> <apply> <ci> Subscript </ci> <ci> z </ci> <cn type='integer'> 5 </cn> </apply> <cn type='real'> -4.6 </cn> </apply> <apply> <lt /> <cn type='real'> -5.7 </cn> <apply> <ci> Subscript </ci> <ci> z </ci> <cn type='integer'> 6 </cn> </apply> <cn type='real'> -5.6 </cn> </apply> <apply> <lt /> <cn type='real'> -6.7 </cn> <apply> <ci> Subscript </ci> <ci> z </ci> <cn type='integer'> 7 </cn> </apply> <cn type='real'> -6.6 </cn> </apply> <ci> … </ci> <apply> <in /> <ci> k </ci> <apply> <ci> SuperPlus </ci> <integers /> </apply> </apply> </apply> </apply> </annotation-xml> </semantics> </math>
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| Cell[BoxData[RowBox[List[RowBox[List["HoldPattern", "[", RowBox[List["Limit", "[", RowBox[List[RowBox[List[RowBox[List["LogGamma", "[", RowBox[List["x_", "+", RowBox[List["\[ImaginaryI]", " ", "\[Epsilon]_"]]]], "]"]], "-", RowBox[List["Log", "[", RowBox[List["Gamma", "[", RowBox[List["x_", "+", RowBox[List["\[ImaginaryI]", " ", "\[Epsilon]_"]]]], "]"]], "]"]]]], ",", RowBox[List["\[Epsilon]_", "\[Rule]", "0"]]]], "]"]], "]"]], "\[RuleDelayed]", RowBox[List[RowBox[List[RowBox[List["-", "2"]], " ", "\[Pi]", " ", "\[ImaginaryI]", " ", "k"]], "/;", RowBox[List[RowBox[List["x", "\[Element]", "Reals"]], "&&", RowBox[List[SubscriptBox["z", RowBox[List[RowBox[List["2", " ", "k"]], "-", "1"]]], "<", "x", "<", SubscriptBox["z", RowBox[List[RowBox[List["2", " ", "k"]], "+", "1"]]]]], "&&", RowBox[List[RowBox[List["PolyGamma", "[", SubscriptBox["z", "k"], "]"]], "\[Equal]", "0"]], "&&", RowBox[List["1.4`", "<", SubscriptBox["z", "0"], "<", "1.5`"]], "&&", RowBox[List[RowBox[List["-", "0.6`"]], "<", SubscriptBox["z", "1"], "<", RowBox[List["-", "0.5`"]]]], "&&", RowBox[List[RowBox[List["-", "1.6`"]], "<", SubscriptBox["z", "2"], "<", RowBox[List["-", "1.5`"]]]], "&&", RowBox[List[RowBox[List["-", "2.7`"]], "<", SubscriptBox["z", "3"], "<", RowBox[List["-", "2.6`"]]]], "&&", RowBox[List[RowBox[List["-", "3.7`"]], "<", SubscriptBox["z", "4"], "<", RowBox[List["-", "3.6`"]]]], "&&", RowBox[List[RowBox[List["-", "4.7`"]], "<", SubscriptBox["z", "5"], "<", RowBox[List["-", "4.6`"]]]], "&&", RowBox[List[RowBox[List["-", "5.7`"]], "<", SubscriptBox["z", "6"], "<", RowBox[List["-", "5.6`"]]]], "&&", RowBox[List[RowBox[List["-", "6.7`"]], "<", SubscriptBox["z", "7"], "<", RowBox[List["-", "6.6`"]]]], "&&", "\[Ellipsis]", "&&", RowBox[List["k", "\[Element]", "Integers"]], "&&", RowBox[List["k", ">", "0"]]]]]]]]]] |
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Date Added to functions.wolfram.com (modification date)
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