# Math - Symbol for Undefined

by Anthony Dipon
(ValenzUelA, Philippines)

Dividing a number by zero is usually considered undefined.

It is often represented with the word UNDEF.

What is the symbol of undefined in math?

### Comments for Math - Symbol for Undefined

 Jan 26, 2012 Symbol for Undefined by: Staff Question: by Anthony Dipon (ValenzUelA, Philippines) what is the symbol of undefined in math?? Answer: There is no symbol that literally means “undefined” as far as I know. Dividing a number by zero is usually considered undefined. It is often represented with the word UNDEF. Dividing by zero is not considered infinity (∞), it is UNDEF. Assuming a number is positive, dividing it by a very small positive number that approaches zero would yield +∞. Dividing by a very small negative number that approaches zero would yield -∞. There is no way to know which it is. The result is UNDEF. Thanks for writing. Staff www.solving-math-problems.com

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 Nov 13, 2016 undefined symbol NEW by: Anonymous in geometry it is consider as point in computer science it is what we called null or NaN NOt a number