7.7.5.0. appelF2

Usage:

appelF2();

Return:

ring (a parametric Weyl algebra) containing an ideal 'IAppel2'

Purpose:

defines the ideal in a parametric Weyl algebra,
which annihilates Appel F2 hypergeometric function

Note:

The output ring is a parametric Weyl algebra. It contains an ideal
'IAappel2' annihilating Appel F2 hypergeometric function.
See (SST) p. 85.

LIB "dmodapp.lib";
def A = appelF2();
setring A;
IAppel2;
==> IAppel2[1]=-x^3*Dx^2+x^2*Dx^2-x^2*y*Dx*Dy+(-a-b-1)*x^2*Dx+x*Dx+(-b)*x*y*D\
   y+(-a*b)*x
==> IAppel2[2]=-x*y^2*Dx*Dy-y^3*Dy^2+y^2*Dy^2+(-c)*x*y*Dx+(-a-c-1)*y^2*Dy+y*D\
   y+(-a*c)*y