Trends in Logic: 50 Years of Studia Logica

Precisely 50 years ago the first volume of Studia Logica appeared. The present volume celebrates the 50th Anniversay of Studia Logica - An Inter- national Joumal for Symbolic Logic. The papers in this Anniversary volume are the results of the two conferences Trends in Logic - 50 Years of Studia Logica.
The first conference took place at The Polish Academy of Sciences, Ja- blonna, Poland, October 4-6, 2003 and featured lectures Michael Dunn (USA), Jens Erik Fenstad (Norway), Dagfinn F0llesdal (Norway), Vincent F. Hendricks (Denmark), Joachim Lambek (Canada), Grzegorz Malinowski (Poland), Ewa Orlowska (Poland) and Krister Segerberg (Sweden). The conference was sponsored by The Institute of Philosophy and Sociology, The Polish Academy of Sciences; Faculty of Mathematics and Computer Science, Adam Mickiewicz University, Poznan, Poland; Faculty of Mathematics and Computer Science, University of Warmia and Mazury, Olsztyn, Poland; The Banach Center and Kluwer Academic Publishers. The Honorary Commit- tee included Henryk Domanski, Zbigniew Palka, Jerzy Pelc, Jan Rychlcwski and Henryk Samsonowicz. The program committee consisted of Ryszard Wojcicki, Wojciech Buszkowski, Jacek Malinowski, Ewa Orlowska and Jan Zygmunt.
The second conference took place at The Carlsberg Academy, Copen- hagen, Denmark, November 20-22, 2003 and featured lectures by Johan van Benthem (The Netherlands), Wojciech Buszkowski (Poland), Leo Esakia (Georgia), Melvin Fitting (USA), Joseph M. Font (Spain), Robert Gold- blatt (New Zealand), Daniele Mundici (Italy), Hiroakira Ono (Japan) and Heinrich Wansing (Germany). The conference was organized by Vincent F. Hendricks, Jacek Malinowski, Stig Andur Pedersen, Ryszard Wojcicki, with the very substantial assistance of Pelle Guldborg Hansen and sponsored by iI>LOG - The Danish Network for Philosophical Logic and Its Applications.
In 1953, exactly 50 years ago to this day, the first volume of Studia Logica appeared under the auspices of The Philosophical Committee of The Polish Academy of Sciences. Now, five decades later the present volume is dedicated to a celebration of this 50th Anniversary of Studia Logica. The volume features a series of papers by distinguished scholars reflecting both the aim and scope of this journal for symbolic logic.