let x, y, z be set ; InnerVertices (GFA1AdderStr x,y,z) = {[<*x,y*>,xor2c ]} \/ {(GFA1AdderOutput x,y,z)}
set f = xor2c ;
set xy = [<*x,y*>,xor2c ];
set S = GFA1AdderStr x,y,z;
thus InnerVertices (GFA1AdderStr x,y,z) =
{[<*x,y*>,xor2c ],(GFA1AdderOutput x,y,z)}
by FACIRC_1:56
.=
{[<*x,y*>,xor2c ]} \/ {(GFA1AdderOutput x,y,z)}
by ENUMSET1:41
; verum