Spring vacation offers a good opportunity to travel.

The mediocre teacher tells. The good teacher explains. The superior teacher demonstrates. The great teacher inspires.

We construct a complete set of reflection functors for the representations of posets and prove that they really have the usual properties. In particular, when the poset is of finite representation type, all of its indecomposable representations can be obtained from some trivial ones via relations. To define such reflection functors, a wider class of matrix problem is introduced, called representations of bisected posets.

Things seem to be running rampant around here lately.