Basic equinumerous examples
121366
Intervals and cardinality
54484
Natural examples of deformation retracts that are not strong deformation retracts
54496
Showing that $\mathbb{R}$ and $\mathbb{R}\backslash\mathbb{Q}$ are equinumerous using Cantor-Bernstein
14322
Examples of bijective map from $\mathbb{R}^3\rightarrow \mathbb{R}$
136592
Examples of manifolds that are not boundaries
94430
Examples of number theory showing up in physics
150961
An example for a homomorphism that is not an automorphism
146480
Example of $\deg(fg)<\deg(f)+\deg(g)$
123078
Code examples, like in the TikZ/PGF manual
158252
Lists of displayed math
28327
(Simple) Examples on Non-Commutative Rings
32544
Give an example of three positive integers m, n, and r
15003
Pythagorean Quadruples:
34798
Example of element of double dual that is not an evaluation map
126790
Basic Isomorphism Question
118130
Mathematical notation around the world
135400
Interval of Convergence examples (-6,6)