Approximation, Randomization, and Combinatorial Optimization. Algorithms and Techniques 12th International Workshop, APPROX 2009, and 13th International Workshop, RANDOM 2009, Berkeley, CA, USA, August 21-23, 2009. Proceedings

Algebra and Coalgebra in Computer Science Third International Conference, CALCO 2009, Udine, Italy, September 7-10, 2009. Proceedings

Computer Algebra in Scientific Computing 11th International Workshop, CASC 2009, Kobe, Japan, September 13-17, 2009. Proceedings

Selected Areas in Cryptography 15th International Workshop, SAC 2008, Sackville, New Brunswick, Canada, August 14-15, Revised Selected Papers

Selected Areas in Cryptography 16th Annual International Workshop, SAC 2009, Calgary, Alberta, Canada, August 13-14, 2009, Revised Selected Papers

Combinatorial Algorithms 20th International Workshop, IWOCA 2009, Hradec nad Moravicí, Czech Republic, June 28–July 2, 2009, Revised Selected Papers

Cryptography and Coding 12th IMA International Conference, Cryptography and Coding 2009, Cirencester, UK, December 15-17, 2009. Proceedings

Parameterized and Exact Computation 4th International Workshop, IWPEC 2009, Copenhagen, Denmark, September 10-11, 2009, Revised Selected Papers

Rewriting Techniques and Applications 20th International Conference, RTA 2009 Brasília, Brazil, June 29 - July 1, 2009 Proceedings

Pairing-Based Cryptography – Pairing 2009 Third International Conference Palo Alto, CA, USA, August 12-14, 2009 Proceedings

Algebraic Informatics Third International Conference, CAI 2009, Thessaloniki, Greece, May 19-22, 2009, Proceedings

Algorithmic Decision Theory First International Conference, ADT 2009, Venice, Italy, October 20-23, 2009. Proceedings