This volume contains the papers presented at the 29th Symposium on Mat- matical Foundations of Computer Science, MFCS 2004, held in Prague, Czech Republic, August 22 27, 2004. The conference was organized by the Institute for Theoretical Computer Science (ITI) and the Department of Theoretical Com- terScienceandMathematicalLogic(KTIML)oftheFacultyofMathematicsand Physics of Charles University in Prague. It was supported in part by the Eu- pean Association for Theoretical Computer Science (EATCS) and the European Research Consortium for Informatics and Mathematics (ERCIM). Traditionally, the...

The 20th InternationalWorkshop on CombinatorialAlgorithms was held during June 28 - July 2, 2009 in the picturesque castle of Hradec nad Moravic ?, located in the north-east corner of the Czech Republic. IWOCA - the workshopthat originated19 yearsagoas AWOCA- madea big step towards globalization this year. After 19 conferences held in Australia, Indonesia, Korea, and Japan, the 20th anniversarywas celebrated by taking the conference outside the Australasian region for the ?rst time. Another novelty this year was that the proceedings are being published by Springer in the LNCS series. Our Call...