Recent Developments in Mathematical Physics

This volume contains the written versions of invited lectures and abstracts of seminars presented at the 26th "Universitatswochen fiir Kernphysik" (Uni­ versity nuclear physics weeks) in Schladming, Austria, in February 1987. Again the generous support of our sponsors, the Austrian Ministry of Sci­ ence and Research, the Styrian government and others, made it possible to invite expert lecturers. T...