In this paper, we consider single machine scheduling problems with
given release dates and the objective to minimize the maximum penalty
which is NP-hard in the strong sense. For this problem, we introduce a
dual and an inverse problem and show that both these problems can be
solved in polynomial time. Since the dual problem gives a lower bound on
the optimal objective function value of the original problem, we incorpo-
rate the optimal function value of a sub-problem of the dual problem into
a branch and bound algorithm for the original single machine scheduling
problem. We present some initial computational results for instances with
up to 20 jobs.