1 “.... This volume contains the lectures of ten distinguished mathematicians designed to provide the reader with a...”

2 “...In 1977 several eminent mathematicians were invited to Durham to present papers at a short...”

3 “... through an overwhelming amount of literature to show young mathematicians how to get to the core...”

4 “... to both mathematicians and physicists. This self-contained graduate text provides a concise and accessible...”

5 “... will be welcomed by graduate students and professional mathematicians who want a rigorous introduction to some...”