In the mathematical field of topology, the Alexandroff extension is a way to extend a noncompact topological space by adjoining a single point in such a way that the resulting space is compact. It is named for the Russian mathematician Pavel Alexandrov.
Pavel Alexandrov named the extension himself.
It is named after him but it isn't known if he named it or if someone else did. The system cannot detect how it was named only who it was named after.