Named after Georg Cantor - German mathematician (1845-1918) and Moritz Cantor - German mathematician (1829-1920).
Cantor is a lunar impact crater on the northern hemisphere on the far side. The outer rim of the crater has a distinctly hexagonal shape, and is slightly longer in the north–south direction. The interior walls are multiply terraced, although less so along the western rim. There is a low central peak at the midpoint of the floor. (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.