ABSTRACT

A few days after the birthday dinner in his honor he was interviewed. The following are excerpts from that interview.

MP: Looking over your mathematical work one is struck by the wide range of mathematical questions you have investigated and the many fi elds in which you have made signifi cant contributions. This is not the usual record for many mathematicians, no matter how able. How did it happen? How did you fi nd so many good problems in so many fi elds?