Rational Numbers near $\sqrt 2$
4552
Choice of $q$ in Baby Rudin's Example 1.1
30478
How to prove that a number is irrational
37219
Quadratic Integers in $\mathbb Q[\sqrt{-5}]$
125267
Prove that $2^{1/2}$ is irrational
50555
Approximation of real number to the power of irrational
75204
Irrationality $\sqrt{2}$ with ideal
24706
Is there a rational number between any two irrationals?
52157
Prove that $d(n)\leq 2\sqrt{n}$
49750
Proof of the square root inequality $2\sqrt{n+1}-2\sqrt{n}<\frac{1}{\sqrt{n}}<2\sqrt{n}-2\sqrt{n-1}$
41767
Sequence of rational numbers converging to an arbitrary irrational number $\beta$.
32
Is $n^{th}$ root of $2$ an irrational number?
142000
Prove that there is an irrational number and a rational number between any two distinct real numbers
75639
Showing that $\sqrt[3]{2}\notin\Bbb Q(\alpha_1,...,\alpha_k)$ where $\alpha_i^2\in\Bbb Q\ \forall i$
3208
There is no smallest rational number greater than 2
1190
Square Root of Rational Number $\frac{A}{B}$
105737
Computing limits which involve square roots, such as $\sqrt{n^2+n}-n$
7500
$\arctan$ of a square root as a rational multiple of $\pi$