How to intuivitely see that $e^{i \pi}+1=0$ is true?
125734
Has anyone talked themselves into understanding Euler's identity a bit?
19628
What is wrong with this fake proof $e^i = 1$?
12401
Is it standard to say $-i \log(-1)$ is $\pi$?
72872
Number of zeroes of solution to $y''(x)+e^{x^2}y(x)=0$ in $[0,3π]$
114031
Show that $\sum_{n=0}^\infty r^n e^{i n \theta} = \frac{1- r\cos(\theta)+i r \sin(\theta)}{1+r^2-2r\cos(\theta)}$
2959
Prove $0! = 1$ from first principles
85311
Proving that $e^{\pi}-{\pi}^e\lt 1$ without using a calculator
21003
Comparing $\pi^e$ and $e^\pi$ without calculating them
77764
Is "$a + 0i$" in every way equal to just "$a$"?
15908
Is it true that $\int_{a}^b h^2=0\implies h=0$?
122076
A one line proof that one is zero using Mathematica 10
105973
how do we know the BBP formula for $\pi$ is valid?
111094
Help with proving that $\pi$ is irrational
107450
False proof that $ρe^{iθ} = ρ$ and so complex numbers do not exist?
12433
How do $\pi^0$ particles exist?
58647
Show that $f$ is integrable and $\int_{I} f=0$
105423
Why doesn't every integral from 0 to $2\pi$ equal zero?