This volume contains 19 articles written by speakers at the Advanced
Study Institute on 'Modular representations and subgroup structure of
al- gebraic groups and related finite groups' held at the Isaac Newton
Institute, Cambridge from 23rd June to 4th July 1997. We acknowledge
with gratitude the financial support given by the NATO Science Committee
to enable this ASI to take place. Generous financial support was also
provided by the European Union. We are also pleased to acknowledge funds
given by EPSRC to the Newton Institute which were used to support the
meeting. It is a pleasure to thank the Director of the Isaac Newton
Institute, Professor Keith Moffatt, and the staff of the Institute for
their dedicated work which did so much to further the success of the
meeting. The editors wish to thank Dr. Ross Lawther and Dr. Nick Inglis
most warmly for their help in the production of this volume. Dr. Lawther
in particular made an invaluable contribution in preparing the volume
for submission to the publishers. Finally we wish to thank the
distinguished speakers at the ASI who agreed to write articles for this
volume based on their lectures at the meet- ing. We hope that the volume
will stimulate further significant advances in the theory of algebraic
groups.