The concrete example within the article titled Rao-Blackwell theorem is perhaps one of the best ways for a probabilist ignorant of statistical inference to get a quick impression of the flavor of that subject.
Differential equations of mathematical physics
An elegant rearrangement of a conditionally convergent iterated integral
Examples of differential equations
Illustration of the central limit theorem
An infinitely differentiable function that is not analytic
A simple proof that 22/7 exceeds &pi
Wallpaper group
Fischer groups
Higman-Sims group
Janko groups
Harada-Norton group
Held group
Lyons group
The Mathieu groups
McLaughlin group
Monster Group
O'Nan group
Rudvalis group
Suzuki sporadic group
Thompson groupUncategorized examples, alphabetized:
Sporadic groups