The Book of Numbers

Rating:
Summary: Artful Numbers
Review: This book is excellent. I am not a mathematician; my Ph.D. is in a social science, but my interest in intellectual history made this book worth it for me. The reason that it seems a bit expensive is because the authors use color illustrations. These are really helpful and make the book more exciting. The book is essentially number theory for a lay person. All you need to have is high school level math in order to start enjoying this book, so don't be afraid. Conway and Guy present a fascinating look at what the human intellect can achieve in the realm of abstract thought. Number theory, and mathematics in general, can be mysterioius, artful, and exciting. Highly recommended.

Rating:
Summary: Delightful!!!
Review: This is a delightful survey of numbers clearly aimed at as wide an audience as possible. However, as is always the case in such books the book is more formidable than it intends or than it looks. Still it is very friendly especially compared with, say, "Numbers" by Ebbinghays et al. The coverage is wide: primes, reals, Cayley numbers, Eisenstein numbers, polygonal numbers, catalan numbers, Stirling numbers of both types and of course Bell numbers. There are the cardinals and ordinals of Cantor as well as Conway's own surreal numbers. (And an earlier reviewer was correct about misprints and color problems.) I recommend this to anyone whose mathematical maturity is at least as great as basic calculus (and who is interested).

Rating:
Summary: nice but not for the timid
Review: This is a really excellent work on all aspects of numbers, but only if you already have a pretty fair familiarity with them, i.e., several college mathematics courses or a significant amount of self-education. I particularly enjoyed the chapter "Doing Arithmetic and Algebra by Geometry" because it provided an interesting perspective on what number is. There are also chapters on the primes, imaginary numbers, infinite numbers etc. etc.

Rating:
Summary: Numbers used as toys
Review: To these "guys", numbers are toys, where the price of possession is nothing but a little knowledge. It is truly astounding, even for veteran mathematicians such as myself, to see how many different sets of numbers there are. They all have a story behind them, and given the multiple uses for so most of them, there are many more yet to be written.
Presented in a unique and engaging style that one associates with the authors, the numbers come to life with descriptions that hold your interest and leave you wanting more. The level of demonstration is not extremely technical, being well within the range of anyone who has been exposed to the topics of precalculus. Figures are used extensively, giving a visual interpretation of several ways in which the numbers can be used. Many of the numbers covered in the book are named after the person most responsible for making it famous, an aspiration that most mathematicians would no doubt confess to. In some cases, I was previously unaware of the name assigned to the numbers.
When I am in the mood for some light reading in mathematics, my preferred form is some type of listing of the properties of numbers. In this case, I found several hours of enjoyment and recommend it to anyone with similar tastes.

Published in Journal of Recreational Mathematics, reprinted with permission.