Edwin R. van Dam

Some recent publications

• • A bound on the girth of quaternion unit gain graphs in terms of the rank (with S. Khan), Math arXiv:2411.19057

  • The Hoffman program for mixed graphs (with Y. Yu), Linear Algebra and its Applications (2025). Math arXiv:2406.18318.

  • Characterizations of amorphic schemes and fusions of pairs (with J.H. Koolen and Y. Xiong), J. Combinatorial Th. A. 215 (2025), 106045. Math arXiv:2404.00567.

  • Rainbow Hamiltonicity and the spectral radius (with Y. Zhang), Discrete Math.  348 (2025), 114600. Math arXiv:2401.17845.

  • Spectra of power hypergraphs and signed graphs via parity-closed walks (with L. Chen and C. Bu), J. Combinatorial Th. A. 207 (2024), 105909.  Math arXiv:2302.10496.

  • Pseudo-geometric strongly regular graphs with a regular point (with K. Guo),  Math arXiv:2204.04755.

  • Unit gain graphs with two distinct eigenvalues and systems of lines in complex space (with P. Wissing), Discrete Math. 345 (2022), 112827. Math arXiv:2105.09149.

  • Partially metric association schemes with a multiplicity three (with J.H. Koolen and J. Park), J. Combinatorial Th. B 130 (2018), 19-48. Math arXiv:1701.03193.

  • Distance-regular graphs (with J.H. Koolen and H. Tanaka), Electronic Journal of Combinatorics (2016), #DS22. Math arXiv:1410.6294.

  • Semidefinite programming and eigenvalue bounds for the graph partition problem (with R. Sotirov), Math. Programming B 151 (2015), 379-404. Math arXiv:1312.0332.

All publications

Editorial

Editor-in-Chief of the Electronic Journal of Combinatorics

E-JC is a very high-standard diamond open access journal (free to read, free to publish)

Teaching

Linear Algebra

Differentiation and Integration Theory

Miscellaneous

Some coauthors: Willem Haemers (11), Jack Koolen (12), Miquel Àngel Fiol (6), Dick den Hertog (6), Ted Spence (5), Cristina Dalfó (3), Reza Omidi (3), Renata Sotirov (3), Sebi Cioabă (2), Misha Muzychuk (2) Hein Fleuren (1), Bill Martin (1), Hajime Tanaka (1), Krystal Guo (1)

My coauthors are from: Belgium, Bosnia and Herzegovina, Canada, Catalonia, China, Croatia, Iran, Israel, Japan, Korea, the Netherlands, Pakistan, Romania, Russia, Scotland, United States.

The Erdös number project (mine is 2)

Presentations

Ph.D. students supervised: Bart Husslage (joint supervision with Dick den Hertog), Gijs Rennen (joint supervision with Dick den Hertog), Pepijn Wissing

Ph.D. students co-promoted: Ineke Meuffels (main supervision by Hein Fleuren), Aida Abiad (main supervision by Willem Haemers)

Space-filling designs (back in the air)

Top 40 Dutch Economists 2004 (I am ranked 31), 2003 (34), 2000 (18)

Research fellow (2001-2006) of the Royal Netherlands Academy of Arts and Sciences (KNAW)