Bijection between Q x Q and natural numbers
38507
Show that $\mathbb{Q}\times \mathbb{Q}$ is denumerable
37951
proof detail concerning bijection between a set and its power set
100465
Does there exist a continuous bijection from $(-1,1) \to (-1,1]$?
119549
Prove the even integers are countable (by explicitly giving a bijection $\mathbb{N} \to E$)
23464
How to find a explicit bijection for some $f:A\times B \rightarrow B \times A$
57269
A special bijection between $\mathbb{R}\times \mathbb{R}$ and $\mathbb{R}$
133699
Proving that there is a bijection between $A$ and $B$.
32362
Detail in bijection between Inn(G) and G/Z(G)?
106884
Is there a continuous bijection between an interval $[0,1]$ and a square: $[0,1] \times [0,1]$?
84114
Does there exist a surjective homomorphism from $(\mathbb R,+)$ to $(\mathbb Q,+)$ ?
130137
How to define a Bijection between $(A^B)^C$ and $A^{B \times C}$
44689
Explicit bijection between $[0,1)$ and $(0,1)$
117793
Finding a function $\mathbb{N} \to \mathbb{N}$ that is surjective but not injective.
3323
Bijection Contruction
124890
Divisibility within a block of natural numbers
49833
Simple bijection $\mathbb N_0 \times \mathbb N_0 \to \mathbb N_0$
69875
Prove the commutativity property of addition of natural numbers by induction