Zero to Infinity: A History of Numbers

Walk the (Number) Line (1x9)

Uitzenddatum: Jan 01, 2007

We have learned about natural numbers, integers, rational numbers, and irrationals. In this lecture, we'll encounter real numbers, an extended notion of number. We'll learn what distinguishes rational numbers within real numbers, and we'll also prove that the endless decimal 0.9999... exactly equals 1.