## The Kingdom of Infinite Number: A Field GuideJust as bird guides help watchers tell birds apart by their color, songs, and behavior, Every number in this book is identified by its "field marks," "similar species," "personality," and "associations." For example, one field mark of the number 6 is that it is the first perfect number-- the sum of its divisors (1, 2, and 3) is equal to the number itself. Thus 28, the next perfect number, is a similar species. And the fact that 6 can easily be broken into 2 and 3 is part of its personality, a trait that is helpful when large numbers are being either multiplied or divided by 6. Associations with 6 include its relationship to the radius of a circle. In addition to such classifications, special attention is paid to dozens of other fascinating numbers, including zero, Ideal for beginners but organized to appeal to the mathematically literate, |

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#### LibraryThing Review

User Review - waltzmn - LibraryThingHow did I enjoy thee? Let me count the ways. This book isn't for everyone, but if you like numbers, this is an incredibly fun book. It is like a field guide to animals or insects or rocks: It is a ... Read full review

#### The kingdom of infinite number: a field guide

User Review - Not Available - Book VerdictThis book's playful conceit is that a number is like a bird--something that is interesting to observe and identify in its native habitat, flocks together in groups and has distinct behavior patterns ... Read full review

### Contents

GenusNaturalCounting Numbers | |

Genera Integral and Rational Signed Numbers | |

GenusRational | |

GenusRealNumberLine Numbers | |

Genus Complex AllInclusive Numbers | |

Kingdom Infinity | |

A Note on Taxonomy | |