A 2006 CHOICEOutstanding Academic Title, this text provides comprehensive coverage of permutations. The second edition features a new chapter on modeling genomes by using permutations. Along with new applications such as genome sorting, this edition includes a set of warm-up exercises to ease readers into a problem solving mode as well as new sections addressing the growth rate of permutation classes, permutation tableaux, superpatterns, and alternating subsequences. The text also discusses pattern avoidance, inversions, and linear orders.