nLab imaginary unit



The complex numbers +i+i and i-i, i.e. the two solutions xx to the equation x 2=1x^2 = -1, are the imaginary units.

A complex number of the form yiy i with yy \in \mathbb{R} a real number is called a purely imaginary number.


Created on January 6, 2018 at 19:28:03. See the history of this page for a list of all contributions to it.