This highly anticipated revision of Michael Sipser’s popular text builds upon the strengths of the previous edition. It tells the fascinating story of the theory of computation-a subject with beautiful results and exciting unsolved questions at the crossroads of mathematics and computer science. Sipser’s candid, crystal-clear style allows students at every level to understand and enjoy this field. His innovative “proof idea” sections reveal the intuition underpinning the formal proofs of theorems by explaining profound concepts in plain English. The new edition incorporates many improvements students and professors have suggested over the years and offers completely updated, classroom-tested problem sets with sample solutions at the end of each chapter. Book jacket.