Willem H. Haemers
Editor (former editor-in-chief) of The Electronic Journal of Combinatorics.
Editor of Innovations in Incidence Geometry.
Former member of the editorial board of Designs, Codes and Cryptography.
Member of the advisory board of Publications de l'Institut Mathématique (Serbia).
Conferences and workshops
Workshop on Algebraic Combinatorics, June 18, 2015, Tilburg University, The Netherlands.
Other things and links
Universitaire Wiskunde Competitie, mathematical problems for students from The Netherlands and Belgium.
Reader with Addendum for a series of lectures on "Matrix techniques for strongly regular graphs and related geometries", given in Ghent (April 2000).
Videos of an advanced course on eigenvalue techniques in graph theory given in Barcelona (June 2011).
1. Interlacing; the appetizer. 2. More interlacing for the adjacency matrix. 3. Perfect matchings. 4. Regularity and spectral characterizations.
Aida Abiad, Andries E. Brouwer, Edwin van Dam, Ted Spence.
Fon-Der-Flaass memorial book.
Chello, UvT-mail, Bibliotheek.
Paintings by Katrien Haemers.