Considered to be the most prolific mathematician in history, Erdös co-authored nearly 1500 scientific papers. During most of his adult life, he traveled from university to university, or conference to conference, living out of two suitcases. He never owned other possessions, did not have a home, and gave away money he didn't need. Often, he would simply show up on a colleague's doorstep unannounced, spending a few days or weeks solving research problems before moving on to another city.
Hoffman's interviews in the math world uncovered some great stories. Later in his life, Erdös apparently needed an operation to correct his dimming vision, but delayed surgery because he was reluctant to lose precious work time. He finally agreed to the procedure only when he mistakenly believed that he would be able to work during surgery.
In honor of his work and life, mathematicians humorously developed the Erdös number. Erdös himself was awarded the number 0. Erdös co-authors are awarded the number 1. Co-authors of co-authors, the number 2. And so on. A low Erdös number is considered to be a great distinction (Steven Hawking, Bill Gates, Noam Chomsky and J. Robert Oppenheimer are 4's; Einstein a 2). Hank Aaron jokingly has a 1 after co-signing a baseball with Erdös. And, of course, a few mathematicians have tried to auction their Erdös numbers on Ebay.




Even if I wasn't interested in the Asian culture, the cover of this book would have caught my eye: a Chinese monk, clearly in deep contemplation, strolling along carrying a Burger King bag. However, having been to China several times and read many books about it, it was fascinating to see another perspective on a country of such contrasts.