Introduction to combinatorics

by Martin J. Erickson

"Praise for the First Edition--"This excellent text should prove a useful accoutrement for any developing mathematics program. it's short, it's sweet, it's beautifully written." --The Mathematical Intelligencer"Erickson has prepared an exemplary work. strongly recommended for inclusion in undergraduate-level library collections." --ChoiceFeaturing a modern approach, Introduction to Combinatorics, Second Edition illustrates the applicability of combinatorial methods and discusses topics that are not typically addressed in literature, such as Alcuin's sequence, Rook paths, and Leech's lattice. The book also presents fundamental results, discusses interconnection and problem-solving techniques, and collects and disseminates open problems that raise questions and observations.Many important combinatorial methods are revisited and repeated several times throughout the book in exercises, examples, theorems, and proofs alike, allowing readers to build confidence and reinforce their understand