| |  
 |  | 
 |  
 |  
 |  
 |  
 |  
 |  |  
 |  
 
 |  
 |  
 |  
 |  
 |  
 |  |  
 |  
 
 |  
 |  
 |  
 |  
 |  
 |  |  
 |  
 
 |  
 |  
 |  
 |  |   
 |  
 |  
 |  
 |  
 |  
 |  
 |  |  
 |  
 |  
 |  
 |  
 |  
 |  
 | | http://functions.wolfram.com/05.02.17.0005.01 | 
 |  
 |  
 |  
 |  
 |  
 |  |   
 |  
 |  |  |   
 |  
 |  
 |  
 |  
 |  
 |  
 |  |  
 |  
 |  
 |  
 |  
 |  
 |  
 | | z p[n, z] == p[n + 1, z] + (2 n + 1) p[n, z] + n^2 p[n - 1, z] /; 
 p[n, z] == (-1)^n n! LaguerreL[n, z] && Element[n, Integers] && n >= 0 | 
 |  
 |  
 |  
 |  
 |  
 |  |   
 |  
 |  
 |  
 |  
 |  
 |  
 |  |  
 |  
 |  
 |  
 |  
 |  
 |  
 | | Cell[BoxData[RowBox[List[RowBox[List[RowBox[List["z", " ", RowBox[List["p", "[", RowBox[List["n", ",", "z"]], "]"]]]], "\[Equal]", RowBox[List[RowBox[List["p", "[", RowBox[List[RowBox[List["n", "+", "1"]], ",", "z"]], "]"]], "+", RowBox[List[RowBox[List["(", RowBox[List[RowBox[List["2", " ", "n"]], "+", "1"]], ")"]], RowBox[List["p", "[", RowBox[List["n", ",", "z"]], "]"]]]], "+", RowBox[List[SuperscriptBox["n", "2"], RowBox[List["p", "[", RowBox[List[RowBox[List["n", "-", "1"]], ",", "z"]], "]"]]]]]]]], "/;", RowBox[List[RowBox[List[RowBox[List["p", "[", RowBox[List["n", ",", "z"]], "]"]], "\[Equal]", RowBox[List[SuperscriptBox[RowBox[List["(", RowBox[List["-", "1"]], ")"]], "n"], RowBox[List["n", "!"]], " ", RowBox[List["LaguerreL", "[", RowBox[List["n", ",", "z"]], "]"]]]]]], "\[And]", RowBox[List["n", "\[Element]", "Integers"]], "\[And]", RowBox[List["n", "\[GreaterEqual]", "0"]]]]]]]] | 
 |  
 |  
 |  
 |  
 |  
 |  |   
 |  
 |  
 |  
 |  
 |  
 |  
 |  |  
 |  
 |  
 |  
 |  
 |  
 |  
 |  |  
 |  
 |  
 | | 
   <math xmlns='http://www.w3.org/1998/Math/MathML' mathematica:form='TraditionalForm' xmlns:mathematica='http://www.wolfram.com/XML/'>  <semantics>  <mrow>  <mrow>  <mrow>  <mi> z </mi>  <mo> ⁢ </mo>  <mrow>  <mi> p </mi>  <mo> ⁡ </mo>  <mo> ( </mo>  <mrow>  <mi> n </mi>  <mo> , </mo>  <mi> z </mi>  </mrow>  <mo> ) </mo>  </mrow>  </mrow>  <mo> ⩵ </mo>  <mrow>  <mrow>  <mi> p </mi>  <mo> ⁡ </mo>  <mo> ( </mo>  <mrow>  <mrow>  <mi> n </mi>  <mo> + </mo>  <mn> 1 </mn>  </mrow>  <mo> , </mo>  <mi> z </mi>  </mrow>  <mo> ) </mo>  </mrow>  <mo> + </mo>  <mrow>  <msup>  <mi> n </mi>  <mn> 2 </mn>  </msup>  <mo> ⁢ </mo>  <mrow>  <mi> p </mi>  <mo> ⁡ </mo>  <mo> ( </mo>  <mrow>  <mrow>  <mi> n </mi>  <mo> - </mo>  <mn> 1 </mn>  </mrow>  <mo> , </mo>  <mi> z </mi>  </mrow>  <mo> ) </mo>  </mrow>  </mrow>  <mo> + </mo>  <mrow>  <mrow>  <mo> ( </mo>  <mrow>  <mrow>  <mn> 2 </mn>  <mo> ⁢ </mo>  <mi> n </mi>  </mrow>  <mo> + </mo>  <mn> 1 </mn>  </mrow>  <mo> ) </mo>  </mrow>  <mo> ⁢ </mo>  <mrow>  <mi> p </mi>  <mo> ⁡ </mo>  <mo> ( </mo>  <mrow>  <mi> n </mi>  <mo> , </mo>  <mi> z </mi>  </mrow>  <mo> ) </mo>  </mrow>  </mrow>  </mrow>  </mrow>  <mo> /; </mo>  <mrow>  <mrow>  <mrow>  <mi> p </mi>  <mo> ⁡ </mo>  <mo> ( </mo>  <mrow>  <mi> n </mi>  <mo> , </mo>  <mi> z </mi>  </mrow>  <mo> ) </mo>  </mrow>  <mo> ⩵ </mo>  <mrow>  <msup>  <mrow>  <mo> ( </mo>  <mrow>  <mo> - </mo>  <mn> 1 </mn>  </mrow>  <mo> ) </mo>  </mrow>  <mi> n </mi>  </msup>  <mo> ⁢ </mo>  <mrow>  <mi> n </mi>  <mo> ! </mo>  </mrow>  <mo> ⁢ </mo>  <mrow>  <msub>  <mi> L </mi>  <mi> n </mi>  </msub>  <mo> ( </mo>  <mi> z </mi>  <mo> ) </mo>  </mrow>  </mrow>  </mrow>  <mo> ∧ </mo>  <mrow>  <mi> n </mi>  <mo> ∈ </mo>  <mi> ℕ </mi>  </mrow>  </mrow>  </mrow>  <annotation-xml encoding='MathML-Content'>  <apply>  <ci> Condition </ci>  <apply>  <eq />  <apply>  <times />  <ci> z </ci>  <apply>  <ci> p </ci>  <ci> n </ci>  <ci> z </ci>  </apply>  </apply>  <apply>  <plus />  <apply>  <ci> p </ci>  <apply>  <plus />  <ci> n </ci>  <cn type='integer'> 1 </cn>  </apply>  <ci> z </ci>  </apply>  <apply>  <times />  <apply>  <power />  <ci> n </ci>  <cn type='integer'> 2 </cn>  </apply>  <apply>  <ci> p </ci>  <apply>  <plus />  <ci> n </ci>  <cn type='integer'> -1 </cn>  </apply>  <ci> z </ci>  </apply>  </apply>  <apply>  <times />  <apply>  <plus />  <apply>  <times />  <cn type='integer'> 2 </cn>  <ci> n </ci>  </apply>  <cn type='integer'> 1 </cn>  </apply>  <apply>  <ci> p </ci>  <ci> n </ci>  <ci> z </ci>  </apply>  </apply>  </apply>  </apply>  <apply>  <and />  <apply>  <eq />  <apply>  <ci> p </ci>  <ci> n </ci>  <ci> z </ci>  </apply>  <apply>  <times />  <apply>  <power />  <cn type='integer'> -1 </cn>  <ci> n </ci>  </apply>  <apply>  <factorial />  <ci> n </ci>  </apply>  <apply>  <ci> LaguerreL </ci>  <ci> n </ci>  <ci> z </ci>  </apply>  </apply>  </apply>  <apply>  <in />  <ci> n </ci>  <ci> ℕ </ci>  </apply>  </apply>  </apply>  </annotation-xml>  </semantics>  </math> 
   | 
 |  
 |  
 |  
 |  
 |  
 |  |  
 |  |  
 |  
 |  
 |  |  
 |  |  
 |  |  
 |  
 |  
 |  |  
 | | Cell[BoxData[RowBox[List[RowBox[List["HoldPattern", "[", RowBox[List["z_", " ", RowBox[List["p", "[", RowBox[List["n_", ",", "z_"]], "]"]]]], "]"]], "\[RuleDelayed]", RowBox[List[RowBox[List[RowBox[List["p", "[", RowBox[List[RowBox[List["n", "+", "1"]], ",", "z"]], "]"]], "+", RowBox[List[RowBox[List["(", RowBox[List[RowBox[List["2", " ", "n"]], "+", "1"]], ")"]], " ", RowBox[List["p", "[", RowBox[List["n", ",", "z"]], "]"]]]], "+", RowBox[List[SuperscriptBox["n", "2"], " ", RowBox[List["p", "[", RowBox[List[RowBox[List["n", "-", "1"]], ",", "z"]], "]"]]]]]], "/;", RowBox[List[RowBox[List[RowBox[List["p", "[", RowBox[List["n", ",", "z"]], "]"]], "\[Equal]", RowBox[List[SuperscriptBox[RowBox[List["(", RowBox[List["-", "1"]], ")"]], "n"], " ", RowBox[List["n", "!"]], " ", RowBox[List["LaguerreL", "[", RowBox[List["n", ",", "z"]], "]"]]]]]], "&&", RowBox[List["n", "\[Element]", "Integers"]], "&&", RowBox[List["n", "\[GreaterEqual]", "0"]]]]]]]]]] | 
 |  
 |   
 |  
 |  
 | |   
 |  
 |  
 |  
 |  
 |  
 |  
 | | Date Added to functions.wolfram.com (modification date) | 
 |  
 |  
 |  
 |  
 |  
 |  
 |  
 |  |  
 |   
 |  
 |  
 |  |  | 
 
 
 | 
 |