
theorem Th40:
  for f,x,y being object holds InputVertices 1GateCircStr(
  <*x,y*>,f) = {x,y}
proof
  let f, x,y be object;
  set p = <*x,y*>;
  thus InputVertices 1GateCircStr(p,f) = rng p by CIRCCOMB:42
    .= {x,y} by FINSEQ_2:127;
end;
