Category
Trivia
The names, facts, and curiosities every mathematician collects.
Mathematics has a history, a cast of characters, and a stock of names, constants and famous results that every mathematician picks up eventually, mostly by accident.
These questions cover notation and where it came from, constants and their values, famous theorems and open problems, and the people behind them. They are short by design — a warm-up, or a way to fill in the gaps nobody teaches directly.
Latest problems
52 problems
Concurrent cevians
1258
30
Factorials and primality
1313
34
The natural extension of Cauchy-Schwarz
1418
24
Three feet, one line
1543
28
Who notated the imaginary unit
1265
34
A family of means, always increasing
1350
25
Curl on a surface, circulation on its edge
1282
24
Generalizing Ceva and Menelaus at once
1547
28