Category
page 1Complex numbers
complex number
number that can be put in the form a + bi, where a and b are real numbers and i is called the imaginary unit
complex analysis
branch of mathematics studying functions of a complex variable
imaginary number
complex number that can be written as a real number multiplied by i
imaginary unit
square root of negative one, used to define complex numbers
complex conjugate
operation on complex numbers in which the sign of the real part is kept but the sign of the imaginary part is reversed
complex plane
geometric representation of the complex numbers
root of unity
complex number whose positive integer power equals one
Gaussian integer
complex number whose real and imaginary parts are both integers

Jean-Robert Argand
Swiss mathematician (1768-1822)

Caspar Wessel
Danish–Norwegian mathematician and cartographer (1745–1818)
imaginary time
Wick-rotated time coordinates in relativistic field theory
complex measure
measure with complex values
table of Gaussian integer factorizations
mathematical table
Gaussian moat
mathematical problem in number Theory
quater-imaginary base
non-standard numeral system