let x, y, z be set ; :: thesis: ( [<*x,y*>,xor2] in InnerVertices (GFA3AdderStr (x,y,z)) & GFA3AdderOutput (x,y,z) in InnerVertices (GFA3AdderStr (x,y,z)) )
set S0 = GFA0AdderStr (x,y,z);
GFA3AdderStr (x,y,z) = GFA0AdderStr (x,y,z) ;
hence ( [<*x,y*>,xor2] in InnerVertices (GFA3AdderStr (x,y,z)) & GFA3AdderOutput (x,y,z) in InnerVertices (GFA3AdderStr (x,y,z)) ) by Th26; :: thesis: verum