**en.wikipedia.org**/wiki/**Complex_number**

A complex number is a number that can be expressed in the form a + bi, where a and b are real numbers, and i is a solution of the equation x 2 = −1. Because no real number satisfies this equation, i is called an imaginary number.

www.quora.com/**Who-invented-imaginary-and-complex-numbers**

It's actually difficult to say who actually was the first to come up with the idea of complex numbers or for that matter any mathematical findings because in mathematics there is no sort of 'inventions' since everything is believed to have existed in nature since the time of inception, just that with more advancement and evolution of human minds men were able to solve the mysteries out...

rossroessler.tripod.com

For school, I had to do a paper on the History of i (and the history of complex numbers in general).Finding this a tedious task, and scrolling through many useless sights, I wished that there were just one sight that had everything I needed on it.

www.math.uri.edu/~merino/spring06/mth562/ShortHistory**ComplexNumbers**2006.pdf

A Short History of Complex Numbers Orlando Merino University of Rhode Island January, 2006 Abstract This is a compilation of historical information from various sources, about the number i = √ −1. The information has been put together for students of Complex Analysis who

**en.wikipedia.org**/wiki/**Number**

The complex numbers consist of all numbers of the form + where a and b are real numbers. Because of this, complex numbers correspond to points on the complex plane, a vector space of two real dimensions. In the expression a + bi, the real number a is called the real part and b is called the imaginary part.

www.reference.com/math/**invented-imaginary-numbers**-c4bf1083953069d3

Who Invented Imaginary Numbers? Greek mathematician Heron of Alexandria is credited with having first conceived of imaginary numbers about the time of Christ, but it was Rafael Bombelli who first described the rules for the use of complex numbers in the late 16th century.

www.answers.com/Q/**Who_invented**_imaginary_**numbers**

A complex number is a number with both real and imaginary numbers, such as (3+2i), where 3 is real and 2i is imaginary. ... but the imaginary numbers were first invented to solve equations with ...

www.answers.com/Q/**Who_invented_complex_numbers**

Who invented complex numbers? W.R.Hamilton. ... A "complex number" is a number of the form a+bi, where a and b are both real numbers and i is the principal square root of -1. Since b can be equal ...

www.cut-the-knot.org/arithmetic/algebra/HistoricalRemarks.shtml

Remarks on the History of Complex Numbers. The study of numbers comes usually in succession. Children start with the counting numbers. Move to the negative integers and fractions. Dig into the decimal fractions and sometimes continue to the real numbers. The complex numbers come last, if at all. Every expansion of the notion of numbers has a valid practical explanation

**www.coursera.org**/lecture/**complex**-analysis/history-of-**complex**-**numbers**-VKY4b

Video created by Wesleyan University for the course "Introduction to Complex Analysis". We’ll begin this module by briefly learning about the history of complex numbers: When and why were they invented? In particular, we’ll look at the rather ...