Alternative to complex numbers - Study numbers $j^2=1$, $j \neq 1$
31542
How many "super imaginary" numbers are there?
132525
Real Numbers Raised to Imaginary Powers?
114822
Prove or disprove an inequality involving complex numbers
20486
Numbers representable as $x^2 + 2y^2$
155285
difficulty of accepting $i^2 = -1$ for first timers
94962
For complex $z$, $|z| = 1 \implies \text{Re}\left(\frac{1-z}{1+z}\right)  = 0$
116014
Write $\frac {1}{1+z^2}$ as a power series centered at $z_0=1$
142076
$c$ is a complex number that satisyfing $(c+\frac{1}{c}+1)(c+\frac{1}{c}) = 1$
48337
Complex numbers equation: $z^4 = -16$
112348
Defining the Complex numbers
16931
Can one do the maths of physics without using $\sqrt{-1}$?
83359
Complex number identity by trigonometry
141360
math behind complex numbers C||RLC
38674
Do complex numbers really exist?
95473
Complex Numbers Geometry
81571
Complex Exponent of Complex Numbers
105727
Why is the complex number $z=a+bi$ equivalent to the matrix form $\left(\begin{smallmatrix}a &-b\\b&a\end{smallmatrix}\right)$