Angenent was raised in
Haarlem, the
Netherlands. He obtained his PhD in Mathematics from
Leiden University in 1986. He became professor at the University of Wisconsin–Madison in 1987. In 1996 Angenent became a correspondent of the
Royal Netherlands Academy of Arts and Sciences. Angenent retired in 2023. The
Angenent torus and
Angenent ovals are special solutions to the
mean curvature flow published by Angenent in 1992; The Angenent torus remains self-similar as it collapses to a point under the flow, and the Angenent ovals are the only compact convex
ancient solutions other than
circles for the
curve-shortening flow. ==References==