Category:Definitions/Named Definitions/Hjalmar Ekdal

This category contains definitions named for Hjalmar Ekdal.

Hjalmar Ekdal is the name chosen by the group of $3$ professors and $5$ students at St Olaf College, Minnesota for the pseudonym of the author of the yet-to-be-written Counterexamples in Topology.

In due course, the book was published as by Lynn Arthur Steen and J. Arthur Seebach, Jr., $2$ of the professors whose efforts made the book possible.