Alex Bogomolny Reviews Which Numbers are Real?

The following review of Michael Henle's Which Numbers Are Real? was published as an MAA Review in October 2012. "My final impression of the book is very positive. Although the subject of the book is just numbers, the collection of number systems outlined in the book serves to demonstrate the breadth and power of mathematical methods and surprising diversity of properties and proof techniques even within related topics. The book should be welcomed by mathematically inclined high school seniors, college undergraduates and their instructors." Read the full review here.

Get a copy of Which Numbers Are Real? in the MAA Store. Alex Bogomolny is a former associate professor of mathematics at University of Iowa. He lives in New Jersey, maintains a popular site Interactive Mathematics Miscellany and Puzzles, with a server somewhere in Michigan, and blogs at CTK Insights. In an extreme need you can tweet him at @CutTheKnotMath.

Which Numbers Are Real?

Which Numbers Are Real? by Michael Henle is now available in the MAA eBooks store! 

Which Numbers Are Real? surveys alternative real number systems: systems that generalize and extend the real numbers while staying close to the properties that make the reals central to mathematics. These systems include, for example, multi-dimensional numbers (the complex numbers, the quaternions, and others), systems that include infinitely small and infinitely large numbers (the hyperreal numbers and the surreal numbers), and numbers that represent positions in games (the surreal numbers). All the systems presented have applications and several are the subject of current mathematical research.

Which Numbers Are Real? will be of interest to anyone who likes numbers, but particularly upper-level undergraduates, graduate students, and mathematics teachers at all levels.

Use coupon code 1930249303 to receive 10% off your entire purchase. This coupon is good only in the eBooks Store.

Offer Expires:  June 30, 2012