From the author of SOPHIE'S WORLD, 'A masterful mixture of fantasy and reality...a simply wonderful read' SHE.
Panina Manina, a trapeze artist, falls and breaks her neck. As the ringmaster bends over her, he notices an amulet of amber around her neck, the same trinket he had given his own lost child, who was swept away in a torrent some sixteen years earlier.
This tale is narrated by Petter, a precocious child and fantasist, and perhaps Jostein Gaarder's most intriguing character since Sophie. As an adult, Petter makes his living selling stories and ideas to professionals...

Recent applications to biomolecular science and DNA computing have created a new audience for automata theory and formal languages. This is the only introductory book to cover such applications. It begins with a clear and readily understood exposition of the fundamentals that assumes only a background in discrete mathematics. The first five chapters give a gentle but rigorous coverage of basic ideas as well as topics not found in other texts at this level, including codes, retracts and semiretracts. Chapter 6 introduces combinatorics on words and uses it to describe a visually inspired...