ANNOUNCEMENT AND CALL FOR PAPERS FOURTH PANHELLENIC LOGIC SYMPOSIUM July 7-10, 2003, Thessaloniki, Greece The Panhellenic Logic Symposium is a biannual scientific event established in 1997. It is open to researchers from all countries who work on Logic broadly conceived. The language of the Symposium is English. The Fourth Panhellenic Logic Symposium will be hosted at the Conference Center of the International Fair of Thessaloniki, located downtown in close proximity to the University campus. The scientific program of the symposium will consist of hour-long invited talks, tutorials and presentations of accepted papers. Original papers on all aspects of Logic are solicited. Authors are invited to submit an extended abstract of at most five pages. In addition, the contact author of each paper should send a cover page with his/her addresses (postal and email) and a statement classifying the paper in one of the following areas: Mathematical Logic, Set Theory, Logic in Computer Science, History of Logic, Philosophy of Logic, other Logic related area (specified). All submitted papers will be reviewed by the scientific committee of the symposium, who will make final decisions on acceptance or rejection. Accepted papers should be presented at the symposium by one of their authors. Each accepted paper will be allocated a thirty-minute period for presentation and questions. Camera-ready extended abstracts not exceeding five pages will be included in a proceedings volume that will be distributed to all participants. SCIENTIFIC COMMITTEE S. Cosmadakis (CTI and U. of Patras) C. Dimitracopoulos (U. of Athens) A. Kakas (U. of Cyprus) A. Kechris (Caltech) L. Kirousis (U. of Patras) Chair Ph. Kolaitis (UC Santa Cruz) G. Koletsos (N.T.U. of Athens), E. Kranakis (Carleton U.) M. Mytilinaios (Athens U. of Economics) Th. Pheidas (U. of Crete) A. Sinachopoulos (Archimedia S.A., Athens) P. Spirakis (CTI and U. of Patras) Th. Tzouvaras (U. of Thessaloniki) S. Zachos (N.T.U. of Athens) ORGANIZING COMMITTEE C. Dimitracopoulos (U. of Athens) C. Hatzikyriakou (U. of Thessaly) A. Kakas (U. of Cyprus) C. Kalfa (U. of Thessaloniki) A. Sinachopoulos (Archimedia S.A. Athens) Th. Tzouvaras (U. of Thessaloniki) Chair WEB ADRESS: http://www2.cs.ucy.ac.cy/pls4 INVITED TALKS D. Bjorner (Technical U. of Denmark) P. Peppas (U. of Patras) K. Sagonas (Uppsala U.) I. Soskov (Sofia U.) TUTORIALS Philosophy of Logic: W. Demopoulos (U. of Western Ontario) Complexity of Logic-Related Problems: E. Koutsoupias (U. of Athens and UCLA) Logic-Based Information Integration: M. Lenzerini (U. di Roma "La Sapienza") Set Theory: A. Louveau (U. Paris 6) ADDRESS FOR SUBMISSION Electronic submissions in PostScript are strongly encouraged Lefteris Kirousis Department of Computer Engineering and Informatics University of Patras, University Campus GR-265 04 Patras, GREECE Phone: +30 2610-99 7702 Fax: +30 2610-99 1909 Email: kirousis@ceid.upatras.gr IMPORTANT DATES Submission: March 28, 2003 Notification: May 9, 2003 Camera-ready abstracts: May 30, 2003