Diamonds and Defaults

This volume contains a selection of papers presented at a Seminar on Intensional Logic held at the University of Amsterdam during the period September 1990-May 1991. Modal logic, either as a topic or as a tool, is common to most of the papers in this volume. A number of the papers are con­ cerned with what may be called well-known or traditional modal systems, but, as a quick glance through this v...