code: def SLT(self, o):
          
  
          signed_bounds_1 = self._signed_bounds()
          signed_bounds_2 = o._signed_bounds()
  
          ret = [ ]
          for lb_1, ub_1 in signed_bounds_1:
              for lb_2, ub_2 in signed_bounds_2:
                  if ub_1 < lb_2:
                      ret.append(TrueResult())
                  elif lb_1 >= ub_2:
                      ret.append(FalseResult())
                  else:
                      ret.append(MaybeResult())
  
          if all(r.identical(TrueResult()) for r in ret):
              return TrueResult()
          elif all(r.identical(FalseResult()) for r in ret):
              return FalseResult()
          else:
              return MaybeResult()
docs: Signed less than
  
          :param o: The other operand
          :return: TrueResult(), FalseResult(), or MaybeResult()