theorem Th22: :: FACIRC_2:22

for x, y, c being set st x <> [<*y,c*>,'&'] & y <> [<*c,x*>,'&'] & c <> [<*x,y*>,'&'] & c <> [<*x,y*>,'xor'] holds
InputVertices (BitAdderWithOverflowStr (x,y,c)) = {x,y,c}