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Chapter one (Mathematical Foundations of Complex Numbers (CN))
Mathematical Foundations of Complex Numbers (CN)
The equation has no solution in the set of real numbers Ɽ. Solving it requires the square roots of a negative number, which led to the invention of complex numbers. In Ȼ, the set of complex numbers, it has two solutions: and , with .
The notation was introduced by Euler, the great Swiss mathematician. In this document, however, we will use instead of . In electrical engineering, is commonly used to denote electric current intensity