About the Number 0 (zero)

0 is a digit along with being a number.

0 is an even number. (???)

0 is not positive, nor is it negative.

0 is an integer and some people catagorize it as a whole number.

0 is not prime.

0! is 1.

Any non-zero number raised to the 0-power is 1. (0^0 is what?)

0 times anything is 0, but division by 0 should be avoided in lower-level math classes.

|0| is 0 (i.e. the absolute value of 0 is 0).

The logarithm of 0 is undefined.

0 is a valid digit in all number systems (i.e. base-2, base-3, base-4, etc.).

In geometry a point has 0 dimensions.

A constant linear function has a slope of 0.

In the C family of programming languages, integers prefixed with 0 are octal numbers and integers prefixed with 0x are hexadecimal. In addition, the first element of an array is at index 0.

Notes From "Zero: The Biography of a Dangerous Idea"

During the Spring 2006 semester, GDT read parts of the book "Zero: The Biography of a Dangerous Idea" by Charles Siefe. The following are hyperlinks to notes taken from the book.

Creator: Gerald D. Thurman [gthurman@gmail.com]
Created: 15 February 2006 