Additional Topics

The purpose of this chapter is to discuss briefly some topics that could not be covered in other chapters in the book and which we feel should still be mentioned. Depending on taste, several of these (and other topics which have been completely left out due to space limitations) could have taken up a whole chapter by themselves. Yet we think that our modest coverage will still show the flavour and potential usefulness of these topics. This applies in particular to the sections on matroids and heuristics for obtaining good solutions to NP-hard problems.