Jaap,
in the beginning of the v4_1 file you write this:


       {                            v }
     k {     v  ( n+l )   1   ( 2r )  }
 Sigma { (-1) . (     ) . - . ( -- )  }
   v=0 {        ( k-v )   v!  (  n )  }


But where you build this sigma function you
write something roughly like this:

#declare CS_v = Binom(n + l, k - v)/Fac(v)/pow(n, v);

And thereafter you add and subtract together
all these for v = 0 to k. Like this:

CS_v*pow(f_r(x, y, z), v)


But what happened to pow(2, v) ?

Is it taken care of somewhere else ?


Tor Olav

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