Is it possible to put pi into terms of rationals
118374
Is there a proof that $\pi$ is an irrational number?
12401
Is it standard to say $-i \log(-1)$ is $\pi$?
67031
use contradiction to prove that the square root of $p$ is irrational
20619
Finding Rational numbers
125812
Is sin(x) necessarily irrational where x is rational?
149942
Convert a decimal number to a fraction / rational number
15330
Double limit of $\cos^{2n}(m! \pi x)$ at rationals and irrationals
15110
About irrational logarithms
59391
$p,q,r$ primes, $\sqrt{p}+\sqrt{q}+\sqrt{r}$ is irrational.
70315
Process to show that $\sqrt 2+\sqrt[3] 3$ is irrational
94382
Calculate the degree of the extension $[\mathbb{Q}(\cos(\frac{2\pi}{p})):\mathbb{Q}]$
86988
Cardinality of the Irrationals
1877
Can an irrational number raised to an irrational power be rational?
62792
Can sum of a rational number and its reciprocal be an integer?
128098
Decimal Expansion of Pi
11069
Deciding whether $2^{\sqrt2}$ is irrational/transcendental
77129
Density of irrationals