Contradiction in Euler’s Identity? $2i\pi = 0$
70974
How can zero divided by $i$ be $2\pi$?
109175
Why is it hard to prove whether $\pi+e$ is an irrational number?
136855
Proof that $\mathbb{Z}\left[\frac{1 + \sqrt{-19}}{2}\right]$ is a PID
83359
Complex number identity by trigonometry
13747
Proof of $\int_0^\infty \frac{\sin x}{\sqrt{x}}dx=\sqrt{\frac{\pi}{2}}$
50038
Proving that $e^\pi=e^{-\pi}$
99120
Integral representation of Euler's constant
111094
Help with proving that $\pi$ is irrational
28771
Prove that $\int_{0}^{1}\sin{(\pi x)}x^x(1-x)^{1-x}\,dx =\frac{\pi e}{24} $
17690
Ways to prove Euler's formula for $\zeta(2n)$
44400
$e^{2\pi i x} = (e^{2\pi i})^x$: What happens if x is rational?
107450
False proof that $ρe^{iθ} = ρ$ and so complex numbers do not exist?
23705
Does $\pi$ contain all possible number combinations?
157066
Do We Need the Digits of $\pi$?
104512
Why is $\frac{1}{2\pi i}\int_{\gamma}\frac{f'(z)}{f(z)}dz$ an integer?
151127
Confirm that $\int_{0}^{\infty}t^{-1}\sin t dt=\pi/2$
12401
Is it standard to say $-i \log(-1)$ is $\pi$?