Preface

We are presenting in this volume the collection of extended abstracts that were selected for presentation at EUROCOMBʼ11 in Budapest. EUROCOMB conferences are organized biannually, the series was started in Barcelona 2001, and continued with Prague 2003, Berlin 2005, Seville 2007 and Bordeaux 2009. Since Prague EUROCOMBʼ03 the European Prize is awarded at the meeting. The prize is established to recognize excellent contributions in Combinatorics, Discrete Mathematics and their Applications by young European researchers (eligibility of EU) not older than 35. It is supported by DIMATIA and by private sources. le of combinatorics is growing in the contemporary research in mathematics, computer science, engineering, also in physics, life and social sciences. This is reflected in the growing interest in EUROCOMB conferences, which became an established forum of the frontier research in these fields. This year a total of 188 contributions were submitted and the Program Committee selected 135 extended abstracts to be presented at the conference. As a comparison, there were 142 contributions for EUROCOMBʼ07 in Seville and 92 of those were selected for presentation. nk all members of the Program Committee for their work. We also thank to allmembers of the Organizing Committee of EUROCOMBʼ11 for all their work in preparing the meeting in lovely Budapest.