File r37/lisp/csl/html/r37_0524.html artifact fabe7e007a part of check-in 1b32ca91d4

<A NAME=ThreejSymbol>

<TITLE>ThreejSymbol</TITLE></A>
<b><a href=r37_idx.html>INDEX</a></b><p><p>



<B>THREEJSYMBOL</B> _ _ _  _ _ _  _ _ _  _ _ _ <B>operator</B><P>
<P>
 
The <em>ThreejSymbol</em> operator implements the 3j symbol. 
<P>
<P>
 <P> <H3> 
syntax: </H3>
<em>ThreejSymbol</em>(&lt;list of j1,m1&gt;,&lt;list of j2,m2&gt;, 
&lt;list of j3,m3&gt;) 
<P>
<P>
<P>
<P>
 <P> <H3> 
examples: </H3>
<P><PRE><TT>

ThreejSymbol({j+1,m},{j+1,-m},{1,0}); 


        j
  ( - 1)  *(abs(j - m + 1) - abs(j + m + 1))
  -------------------------------------------
             3       2                    m
   2*sqrt(2*j   + 9*j   + 13*j + 6)*( - 1)

</TT></PRE><P>