Is $\pi e$ irrational?
120906
Is there a proof that $\pi \times e$ is irrational?
12401
Is it standard to say $-i \log(-1)$ is $\pi$?
7801
Can you raise a number to an irrational exponent?
44573
Can $\pi$ be rational in some base radix
107105
Is an irrational number odd or even?
96204
Irrational number $\sqrt2$ proof
101162
Square root of $2$ is irrational
105679
Can $\pi$ or $e$ be a root of a polynomial with algebraic coefficients?
44400
$e^{2\pi i x} = (e^{2\pi i})^x$: What happens if x is rational?
105177
Gosper's unusual formula connecting $e$ and $\pi$
89716
Is there a proof of the irrationality of $\sqrt{2}$ that involves modular arithmetic?
111094
Help with proving that $\pi$ is irrational
81957
How many roots have a complex number with irrational exponent?
109175
Why is it hard to prove whether $\pi+e$ is an irrational number?
21003
Comparing $\pi^e$ and $e^\pi$ without calculating them
140949
Proving that for each prime number $p$, the number $\sqrt{p}$ is irrational
22408
Jutifying: irrational + rational = irrational