Named after Karl Weierstrass - German mathematician (1815-1897).
Weierstrass is a small lunar crater that is attached to the northern rim of the walled plain Gilbert, in the eastern part. It also lies very near the crater Van Vleck, a similar formation just to the southeast that is almost attached to the outer rim. Due to its location, the crater appears foreshortened as seen from the Earth. The crater has an oval-shaped outer rim that is longer along an east–west axis. (wikipedia entry)
A crater is a circular depression likely created by an impact event. On the Moon they are named after deceased scientists, polar explorers, astronauts or cosmonauts.
