Bang up to date, extremely topical, with no readable rivals, this book is superb! It is by far and away the best introduction to the subject I have ever read. Dr Reznik has managed to hit the right tone between academic formality and readability to produce a book whose style flows smoothly and carries you along. Remarkably it will be suitable for general readers in industry and as a course book for undergraduates. Reznik's book will stand alone.