Colin P. Rourke
Colin Rourke (1 January 1943 – 18 December 2024) was an eminent British mathematician who worked in PL topology, low-dimensional topology, differential topology, group theory, relativity and cosmology. He was an emeritus professor at the Mathematics Institute at the University of Warwick and a founding editor of the journals Geometry & Topology and Algebraic & Geometric Topology, published by Mathematical Sciences Publishers, where he was a permanent member of its board of directors.