The proceedings of the Association for Symbolic Logic meeting held in Helsinki, Finland, in July 1990, containing eighteen papers written by leading researchers in logic. Between them they cover all fields of mathematical logic, including model theory, proof theory, recursion theory, and set theory.

Since their inception, the Perspectives in Logic and Lecture Notes in Logic series have published seminal works by leading logicians. Many of the original books in the series have been unavailable for years, but they are now in print once again. This volume, the second publication in the Lecture Notes in Logic series, is the proceedings of the Association for Symbolic Logic meeting held in Helsinki, Finland, in July 1990. It contains eighteen papers by leading researchers, covering all fields of mathematical logic from the philosophy of mathematics, through model theory, proof theory, recursion theory, and set theory, to the connections of logic to computer science. The articles published here are still widely cited and continue to provide ideas for ongoing research projects.

This volume is the Proceedings of Logic Colloquium 90 held in Helsinki, Finland, from July 15 to July 22, 1990. The congress belongs to the annual series of the European Summer Meetings of the Association for Symbolic Logic. These proceedings contain 13 research papers written mainly by the invited speakers of the congress. They represent all fields of mathematical logic from the philosophy of mathematics through model theory, proof theory, recursion theory and set theory, to connections of logic to computer science.

This book covers the proceedings of a meeting of the Association for Symbolic Logic held in Helsinki, Finland, in July 1990. It contains 18 papers written by leading researchers in logic, including most of the invited speakers of the meeting. They cover all fields of mathematical logic from the philosophy of mathematics through model theory, proof theory, recursion theory and set theory, to connections of logic to computer science. The articles published here are still widely referred to and continue to provide ideas for ongoing research projects.