Preface for the special issue in homage to Martin Hofmann Part 1

Abstract

This is the first part of a two-part special issue of Mathematical Structures in Computer Science dedicated to the memory of our friend and colleague, Martin Hofmann. On 21 January 2018, Martin Hofmann died in a tragic mountain hiking accident in Japan. He was there to attend a workshop at NII Shonan and arrived early for the workshop in order to spend a day climbing Mount Nikkō-Shirane. On his way down from the 2578-m summit, he was caught in a severe snowstorm and lost his way back to safety. Martin Hofmann studied for a Diplom in Informatics at Universität Erlangen-Nürnberg from November 1984 until August 1991. During an exchange visit at the Université de Nice from October 1987 to June 1988, he obtained in addition the ‘Maitrise de Mathematiques’. In 1991, he joined the Laboratory for Foundations of Computer Science at the University of Edinburgh. He obtained his PhD in June 1995 with a dissertation entitled ‘Extensional Concepts in Intensional