## Archive for the ‘problems’ Category

### Valentine Convex Sets

26Apr08

Here’s a problem which I was introduced to in 1997 in Halifax, failed miserably to solve (along with some other students), and then mentioned at a bar and got many people very confused last week. You need to know the definition of a convex set: a set is convex if for each two points u, […]

Filed under: geometry, math, problems | 3 Comments