Difference between revisions of "User:Tohline/Appendix/Mathematics/ToroidalConfusion"

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=Confusion Regarding Whipple Formulae=
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May, 2018:  I am trying to figure out what the correct relationship is between half-integer degree, associated Legendre functions of the first and second kinds.  In order to illustrate my current confusion, here I will restrict my presentation to expressions that give <math>~Q^m_{n - 1 / 2}(\cosh\eta)</math> in terms of <math>~P^n_{m - 1 / 2}(\coth\eta)</math>.


{{LSU_HBook_header}}
From [http://adsabs.harvard.edu/abs/2000AN....321..363C H. S. Cohl, J. E. Tohline, A. R. P. Rau, &amp; H. M. Srivastiva (2000, Astronomische Nachrichten, 321, no. 5, 363 - 372)] I find:
<table border="0" cellpadding="5" align="center">
 
<tr>
  <td align="right">
<math>~Q^m_{n - 1 / 2}(\cosh\eta)</math>
  </td>
  <td align="center">
<math>~=</math>
  </td>
  <td align="left">
<math>~
\frac{(-1)^n \pi}{\Gamma(n - m + \tfrac{1}{2})} \biggl[ \frac{\pi}{2\sinh\eta} \biggr]^{1 / 2} P^n_{m - 1 / 2}(\coth\eta) \, .
</math>
  </td>
</tr>
</table>






{{LSU_HBook_header}}


=See Also=
=See Also=

Revision as of 15:50, 9 May 2018


Confusion Regarding Whipple Formulae

May, 2018: I am trying to figure out what the correct relationship is between half-integer degree, associated Legendre functions of the first and second kinds. In order to illustrate my current confusion, here I will restrict my presentation to expressions that give <math>~Q^m_{n - 1 / 2}(\cosh\eta)</math> in terms of <math>~P^n_{m - 1 / 2}(\coth\eta)</math>.

From H. S. Cohl, J. E. Tohline, A. R. P. Rau, & H. M. Srivastiva (2000, Astronomische Nachrichten, 321, no. 5, 363 - 372) I find:

<math>~Q^m_{n - 1 / 2}(\cosh\eta)</math>

<math>~=</math>

<math>~ \frac{(-1)^n \pi}{\Gamma(n - m + \tfrac{1}{2})} \biggl[ \frac{\pi}{2\sinh\eta} \biggr]^{1 / 2} P^n_{m - 1 / 2}(\coth\eta) \, . </math>


Whitworth's (1981) Isothermal Free-Energy Surface
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See Also

Whitworth's (1981) Isothermal Free-Energy Surface

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