Find a bijective function between two sets
10458
How to define a bijection between $(0,1)$ and $(0,1]$?
132868
Bijection between an infinite set and its union of a countably infinite set
5375
Is there a bijective function mapping Natural numbers to Natural numbers, other than $f(n) = n$?
49953
Proving that a function from $N\times N$ to $N$ is bijective.
31244
Is this a correct bijection between $(0,1]$ and $[0,1]$?
14277
Proving $f(x)=x\cdot |x|$ is a bijection
31391
bijection between $\mathbb{N}$ and $\mathbb{N}\times\mathbb{N}$
21663
Bijection between power sets of sets implies bijection between sets?
57269
A special bijection between $\mathbb{R}\times \mathbb{R}$ and $\mathbb{R}$
5803
Produce an explicit bijection between rationals and naturals?
57822
Number of ways to choose two disjoint subsets of a set
23125
Prove that there is a bijection between the set of all subsets of $X$, $P(X)$, and the set of functions from $X$ to $\{0,1\}$.
83996
For any two sets $A,B$ , $|A|\leq|B|$ or $|B|\leq|A|$
67451
Building a bijection from a finite union of countable sets to $\mathbb{N}$
151947
Finding a pair of functions with properties
141225
Number of all bijective functions from A to A.
148399
Two sets which contain each other as elements