Three PhD student positions in theoretical CS, Stockholm (Sweden)

We are announcing three graduate student postions at the Royal Institute of Technology in Stockolm, Sweden in the following areas:
- Approximation of NP-hard optimization problems.
- Cryptographic protocols.
- Formal methods.

Deadline for applications is May 16. For more information on the theory group and the positions please consult our home page at Royal Institute of Technology. It is located at http://www.csc.kth.se/tcs/.