Szego Seminar: "The Dehn Invariant"
Abstract: David Hilbert, calling it his third problem, asked whether two polyhedra of equal volume could be dissected into each other. Dehn, a student of Hilbert, answered this question by defining a topological invariant (now bearing his name) that is invariant under dissection. We will discuss this invariant and give Dehn’s answer to the problem.
Host: Nathan Wagner