Just watched this documentary about this remarkable mathematician, who lived between 1913 and 1996. Remarkable for the number of publications, remarkable for the number off people he published with and remarkable for traveling with a half full suite case and a plastic bag around the world, visiting mathematicians never visiting home.
In the Netherlands he worked together with J.F. Koksma, J.H. van Lint, N.G. de Bruijn, R. Tijdeman and J.W.M. de Turk.