Imaginary unit
From Encyclopedia of Mathematics
A complex number $i$ whose square is equal to minus one: $i^2=-1$.
How to Cite This Entry:
Imaginary unit. Encyclopedia of Mathematics. URL: http://encyclopediaofmath.org/index.php?title=Imaginary_unit&oldid=17926
Imaginary unit. Encyclopedia of Mathematics. URL: http://encyclopediaofmath.org/index.php?title=Imaginary_unit&oldid=17926