Henk Broer
Hendrik Wolter (Henk) Broer (born 18 February 1950, Diever) is a Dutch mathematician known for contributions to the theory of nonlinear dynamical systems. He was professor at the University of Groningen between 1981 and 2015. Biography. Broer was granted a doctorate in the faculty of mathematics and natural sciences in 1979 under the supervision of Floris Takens for a thesis entitled "Bifurcations of singularities in volume preserving vector fields. "He was a professor at the University of Groningen, the Netherlands, from 1981 till his retirement in 2015. In 1985 he spent a semester as a guest professor of  Boston University, Massachusetts. He is a long term member of the Royal Dutch Mathematical Society, serving as chairman from 2007 to 2009. Awards and honors. In 2008 Broer became a member of the Royal Netherlands Academy of Arts and Sciences and in 2015 he was made a Knight of the Order of the Netherlands Lion.