Affix of a complex number
Let $z=a+ib$ in its geometric representation. Affix is the point in the complex plane corresponding to this number, i.e. the point with Cartesian coordinates $(a,b)$. The affix is sometimes identified with the complex number itself.
Affix of a complex number. Encyclopedia of Mathematics. URL: http://encyclopediaofmath.org/index.php?title=Affix_of_a_complex_number&oldid=30622