| Email: | My user name is johanh and this should be followed by the at sign and then nada.kth.se |
| Phone: | +46 8 790 62 89 |
| Fax: | +46 8 790 09 30 |
| Address: | Nada, KTH, SE-100 44 Stockholm, Sweden |
| Visiting address: | Osquars backe 2, floor 4, room 1435 |
| Home address: | H�stigen 16, 182 73 Stocksund, +46-8-755 2111 |
I am deputy director of CIAM a center of excellence sponsored by SSF, the foundation for strategic research.
I am an editor for the journals Theory of Computing, Computational Complexity, Random Structures and Algorithms and ACM Transactions on Computation Theory.