Drexel dragonThe Math ForumDonate to the Math Forum

The Math Forum Internet Mathematics Library

Ian's Proof that Infinity = -1

Library Home || Full Table of Contents || Suggest a Link || Library Help

Visit this site: http://mathman.biz/html/prob3.html

Author:Don Cohen (The Mathman)
Description: Young children try writing the sum of an infinite series as a fraction. What's wrong with Ian's argument? Newton and Euler and those other mathematicians had made similar mistakes with infinite series! The problem is that the infinite series converges only when the absolute value of a is less than 1. So it's okay to make mistakes! A sample problem with answers from Chapter 3 of Don Cohen's worksheet book.

Levels: Elementary
Languages: English
Resource Types: Problems/Puzzles
Math Topics: Number Theory

[Privacy Policy] [Terms of Use]

Home || The Math Library || Quick Reference || Search || Help

© 1994- The Math Forum at NCTM. All rights reserved.