Acknowledgements
We express our sincere thanks to Jean-Pierre Tignol whose comments significantly
improved the manuscript. We thank Anne Quéguiner-Mathieu for useful discussions
on classical groups and the three referees for their encouraging comments and
suggestions.
We are grateful to the Stoilow Mathematical Institute of the Romanian Academy
(Bucharest) for the hospitality during part of our work on this book.
ix
We express our sincere thanks to Jean-Pierre Tignol whose comments significantly
improved the manuscript. We thank Anne Quéguiner-Mathieu for useful discussions
on classical groups and the three referees for their encouraging comments and
suggestions.
We are grateful to the Stoilow Mathematical Institute of the Romanian Academy
(Bucharest) for the hospitality during part of our work on this book.
ix