Appendix/Mathematics/Hypergeometric: Difference between revisions

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Created page with "__FORCETOC__ <!-- __NOTOC__ will force TOC off --> =Hypergeometric Differential Equation= According to §9.151 (p. 1045) of GR, <font color="darkgreen">"… a hypergeometric series is one of the solutions of the differential equation, <table border="0" cellpadding="5" align="center"> <tr> <td align="right"> <math>\frac{dH(x)}{dx}</math> </td> <td align="center"> <math>=</math> </td> <td align="left"> <math>\delta(x) \, ,</math> </td> </tr> </t..."
 
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=Hypergeometric Differential Equation=
=Hypergeometric Differential Equation=


According to &sect;9.151 (p. 1045) of GR, <font color="darkgreen">"&hellip; a hypergeometric series is one of the solutions of the differential equation,
According to &sect;9.151 (p. 1045) of [http://www.mathtable.com/gr/ Gradshteyn &amp; Ryzhik], <font color="darkgreen">"&hellip; a hypergeometric series is one of the solutions of the differential equation,
<table border="0" cellpadding="5" align="center">
<table border="0" cellpadding="5" align="center">


<tr>
<tr>
   <td align="right">
   <td align="right">
<math>\frac{dH(x)}{dx}</math>
<math>0</math>
   </td>
   </td>
   <td align="center">
   <td align="center">
Line 15: Line 15:
   </td>
   </td>
   <td align="left">
   <td align="left">
<math>\delta(x)   \, ,</math>
<math>
z(1-z) \frac{d^2u}{dz^2} + [\gamma - (\alpha + \beta + 1)z] \frac{du}{dz} - \alpha \beta u
\, ,</math>
   </td>
   </td>
</tr>
</tr>
</table>
</table>
which is called the ''hypergeometric equation."</font>
which is called the ''hypergeometric equation.''</font> And, according to &sect;9.10 (p. 1039) of [http://www.mathtable.com/gr/ Gradshteyn &amp; Ryzhik], <font color="darkgreen">"A ''hypergeometric series'' is a series of the form,</font>
<table border="0" cellpadding="5" align="center">
 
<tr>
  <td align="right">
<math>F(\alpha, \beta; \gamma; z)</math>
  </td>
  <td align="center">
<math>=</math>
  </td>
  <td align="left">
<math>
1 + \biggl[\frac{\alpha \cdot \beta}{\gamma \cdot 1} \biggr]z
+
\biggl[\frac{ \alpha(\alpha+1)\beta(\beta+1) }{ \gamma(\gamma+1)\cdot 1\cdot 2 }\biggr]z^2
+
\biggl[\frac{ \alpha(\alpha+1)(\alpha+2)\beta(\beta+1)(\beta+2) }{ \gamma(\gamma+1)(\gamma+2)\cdot 1\cdot 2 \cdot 3}\biggr]z^3
+
\dots
</math>
  </td>
</tr>
</table>
Among other attributes, [http://www.mathtable.com/gr/ Gradshteyn &amp; Ryzhik] note that this, <font color="darkgreen">"&hellip; series terminates if <math>\alpha</math> or <math>\beta</math> is equal to a negative integer or to zero."</font>


=See Also=
=See Also=


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Revision as of 17:53, 25 October 2022


Hypergeometric Differential Equation

According to §9.151 (p. 1045) of Gradshteyn & Ryzhik, "… a hypergeometric series is one of the solutions of the differential equation,

0

=

z(1z)d2udz2+[γ(α+β+1)z]dudzαβu,

which is called the hypergeometric equation. And, according to §9.10 (p. 1039) of Gradshteyn & Ryzhik, "A hypergeometric series is a series of the form,

F(α,β;γ;z)

=

1+[αβγ1]z+[α(α+1)β(β+1)γ(γ+1)12]z2+[α(α+1)(α+2)β(β+1)(β+2)γ(γ+1)(γ+2)123]z3+

Among other attributes, Gradshteyn & Ryzhik note that this, "… series terminates if α or β is equal to a negative integer or to zero."

See Also

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