The series of MFCS symposia, organized in rotation by Poland, Slovakia, and the Czech Republic since 1972, has a long and well-established tradition. The symposiaencouragehigh-qualityresearchinallbranchesoftheoreticalcomputer science.Their broadscopeprovidesanopportunityto bring together researchers whodonotusuallymeetatspecialized conferences. The 35th International Symposium on Mathematical Foundations of C- puter Science (MFCS 2010) was organized in parallel with the 19th EACSL Annual Conference on Computer Science Logic (CSL 2010). The federated MFCS and CSL 2010 conference had shared...