About AC Aims and Scope Annals of Combinatorics (AC) will publish outstanding contributions to combinatorial mathematics in all its respects. Special regard will be given to new developments which have yet to be given proper recognition but which in the opinion of the editors show promise of eventual mathematical breakthroughs. Papers published in Annals of Combinatorics will not be limited to the field of combinatorics in the strict sense. They will range over problems and theories that have arisen or will arise in applications to computer science biology statistics probability physics and chemistry as well as over work of a combinatorial nature in representation theory number theory topology algebraic geometry and the theory of special functions. Annals of Combinatorics will also publish research announcements book reviews as well as revealing and inspiring expositions. This journal will at all times ensure the efficient and speedy processing of submitted manuscripts.