Why is $i^2$ equal to $-1$?
38674
Do complex numbers really exist?
5526
Prove that $ℤ[i]^*= \{1,-1,i,-i\}$
48086
Why is this series of square root of twos equal $\pi$?
151930
What does it mean by $t=-1$?
96328
Proving $e^{i\pi} = -1$ without proving $e^{ix} = \cos x + i\sin x$
140459
Why is $\left(e^{2\pi i}\right)^i \neq e^{-2 \pi}$?
100968
Why is $|e^{i \lambda z}| |e^{- \lambda y}|= |e^{- \lambda y}|$ here?
124581
Solving $x^2 - 1 = e^x$
50038
Proving that $e^\pi=e^{-\pi}$
105423
Why doesn't every integral from 0 to $2\pi$ equal zero?
108633
Why $f^{-1}(f(A)) \not= A$
150229
Find all the values of $(1+i)^{(1-i)}$
104441
Difference between i and -i
49444
Why isn't $e^{2\pi xi}=1$ true for all $x$?
19628
What is wrong with this fake proof $e^i = 1$?
154001
$(g\circ f)^{-1}=f^{-1}\circ g^{-1}$
121767
Why $\det(A^{-1}) = 1/\det(A)$?