Paul Erdos was one of the greatest mathematicians of the 20th Century, the one that other mathematicians measure their distance from, and beyond that one of the most interesting. His highly collaborative, highly nomadic life brought him in touch with hundreds if not thousands of other mathematicians, and every single on of them has their own Erdos story to tell. In order to find out more about the man, Samuel Hansen spoke to three of his collaborators and the man who runs the Erdos Number Project.
Joel Spencer is a Professor in the Computer Science and Mathematics Departments at New York University.
Carl Pomerance is the John G. Kemeny Parents Professor in the Department of Mathematics at Dartmouth College.
Ron Graham is the Irwin and Joan Jacovs Professor in Computer Science and Engineering at the University of California, San Diego and Chief Scientist at the California Institute for Telecommunications and Information Technology.