0 a number that is the square root of a negative number
1 a number that is the square root (= number you multiply by itself to get a particular number) of a negative number (= number less than zero), especially the square root of -1
Bombelli called the imaginary number i plus of minus or minus of minus for -i.
In complex numbers, the cube of a purely imaginary number is also purely imaginary.
This is because the result of a negative integer under the radical will result in an imaginary number.
Imaginary number literals can be specified by appending a j.
A complex number is a quantity which can be written as the sum of a real number plus an imaginary number.
It is a non-standard positional numeral system which uses the imaginary number 2 "i" as its base.
For example, is an imaginary number, and its square is.
The name imaginary number was coined in the 17th century as a derogatory term, as such numbers were regarded by some as fictitious or useless.
