Finding a surjection onto [0,1]
39189
Argue by contradiction to show that there is no surjection...
79285
Does there exist a continuous surjection from $\Bbb R^3-S^2$ to $\Bbb R^2-\{(0,0)\}$?
35569
Prove that $[0,1]$ isn't homeomorphic to $\mathbb{R}$
93102
prove that $f:X\rightarrow Y$ is surjective if and only if $f(f^{-1}(C))=C$
45216
Cardinality of $[0,1]$
15909
Bijection from $\mathbb R$ to $\mathbb {R^N}$
74453
Injective and Surjective Functions
81295
Transforming arbitrary distributions to distributions on $[0,1]$
61
Calculating the total number of surjective functions
124374
A bijective function between a square and its side
20199
Find a surjective function $f:\mathbb{N}\to \mathbb{Q}$
1117
Is there a bijection between $(0,1)$ and $\mathbb{R}$ that preserves rationality?
3276
Function $f:[0,1] \to [0,1]$ taking on each value in $[0,1]$ exactly twice
40566
Counting surjective functions
13193
Does a inverse function need to be either surjective or injective?
2396
Order-preserving injections of ordinals into $[0,1]$
125644
How to check f is surjective