# Euler's phi-function

## Origin of Euler's phi-function

named after L. Euler

Also called phi-function.

Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

named after L. Euler

Also called phi-function.

Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018