Are products of powers of 2 and powers of 3 dense in the nonnegative reals?
13550
For an irrational number $\alpha$, prove that the set $\{a+b\alpha: a,b\in \mathbb{Z}\}$ is dense in $\mathbb R$
142315
How does the Axiom of Regularity apply to $A=\{1,2,3\}$?
121831
Proving that rational numbers are dense
92571
Sets with no asymptotical density over $\mathbb N$
90276
Is $\sqrt{2}\in{\Bbb Z}[\sqrt{2}+\sqrt{3}]$ true?
54554
If a product of relatively prime integers is an $n$th power, then each is an $n$th power
64896
Dealing with non-integral powers on negative numbers
26256
Characterizing Dense Subgroups of the Reals
1478
An inequality for powers of reals: $a^{1/n}-b^{1/n}<(a-b)^{1/n}$
25795
Density of $\mathbb{Q}^n$ in $\mathbb{R}^n$
88523
Show that $A=\{ \frac{m}{2^n}:m\in \mathbb {Z},n\in \mathbb {N} \} $ is dense in $\mathbb {R}$
138279
Multiplicative order and powers
111898
Is $\{ (e^{2\pi i a n},e^{2\pi i b n }) : n \in \mathbb{Z} \}$ dense in the torus, where $a,b$ irrationals such that $a/b$ irrational?
115514
Is the product $\prod_{k=1}^\infty \frac{2^k-1}{2^k}$ necessarily $0$?
83280
Infinite product $ \prod^{\infty}_{n=0}\left(1-\frac{1}{2^{3n}}-\frac{1}{2^{6n}}\right)$
27472
Prove that $PSL(2,\mathbb{Z})$ is free product of $C_2$ and $C_3$
154076
How to show this property of $\mathbb{RP}^{n}$.