Irving Kaplansky
![](https://celebratio.org/media/photo/pgroup_43/DSC00651.jpg.800x800_q85.jpg)
(Photo courtesy of Hy Bass.)
Kap's 80th birthday celebration held at MSRI on March 19, 1997. From left to right:
Elwyn Berlekamp,
Robin Hartshorne,
Paul Vojta,
Bjorn Poonen, an unidentified individual, and Kap.