Is there a proof for existence of complex and hypercomplex numbers
38674
Do complex numbers really exist?
50994
Complex solutions to real equation?
95105
Solutions in complex number field, instead of $\mathbb{N}$, to Fermat's Last Theorem
58636
Do the real numbers and the complex numbers have the same cardinality?
139162
Complex number isomorphic to certain $2\times 2$ matrices?
141983
Complex polynomial of degree $n$
9737
Complex number operations: telling Mathematica variables are real
16852
$|e^a-e^b| \leq |a-b|$ for complex numbers with non-positive real parts
29064
Can the real and imaginary parts of $\dfrac{\sin z}z$ be simplified?
51314
How to prove that a complex number is not a root of unity?
107450
False proof that $ρe^{iθ} = ρ$ and so complex numbers do not exist?
18334
Equivalence between CH and existence of certain sets in $\mathbb{R}^2$
125164
How to prove the existence of $b$ in $Q$ such that $a<b^2<c$ in $Q$?
140968
Proof for Property of Complex Numbers
88887
Using the properties of real numbers, verify commutativity on complex numbers.
73687
Powers of $i$ in Complex Numbers.
114043
Prove the existence of a real number satisfying a property