The mapping of a Set onto the characteristic function is a bijection
106091
Showing $\mathcal{P}(X)$ is isomorphic to $2^X$
82003
Bijection between sets of ideals
64140
Find a bijection from $\mathbb R$ to $\mathbb R-\mathbb N$
1117
Is there a bijection between $(0,1)$ and $\mathbb{R}$ that preserves rationality?
49953
Proving that a function from $N\times N$ to $N$ is bijective.
10307
Show the inverse of a bijective function is bijective
41593
Use of Bijection for computation
108271
Characteristic map of a n-cell in a CW complex
17391
Diagonalisation and characteristic polynomial
132868
Bijection between an infinite set and its union of a countably infinite set
118595
Proving that a set is countable by finding a bijection
141114
Question about a bijection between $\mathbb R$ and $\mathbb R \cup \{\infty\}$
37951
proof detail concerning bijection between a set and its power set
23464
How to find a explicit bijection for some $f:A\times B \rightarrow B \times A$
93776
Bijective mapping between $\mathbb{R}^2$ and $\mathbb{R}$?
130381
bijection from $(a,b)$ to $\Bbb R$
133699
Proving that there is a bijection between $A$ and $B$.