Combinatorial Optimization (2nd ed.)

It was more than a surprise to us that the first edition of this book already went out of print about a year after its first appearance. We were flattered by the many positive and even enthusiastic comments and letters from colleagues and the gen­ eral readership. Several of our colleagues helped us in finding typographical and other errors. In particular, we thank Ulrich Brenner, Andras Frank, Bernd Gartner and Rolf Mohring. Of course, all errors detected so far have been corrected in this seco