The Sections on Rationality and Society and Mathematical Sociology, the Japanese Association for Mathematical Sociology, and the International Sociological Association Research Committee 45 planned to cosponsor the Seventh Joint U.S.-Japan Preconference on Mathematical Sociology and Rational Choice. However, as you know, the 2020 ASA Annual Meeting in San Francisco has been cancelled due to the COVID-19 pandemic.
After careful consideration, the organizers decided to postpone the preconference until the next year. The new plan is to hold it on August 6, 2021, a day before the annual ASA meeting, in Chicago. We regret the change but look forward to seeing you all in Chicago!
(Jun Kobayashi, Richard Edward Gardner, Kikuko Nagayoshi, Kazuhiro Kezuka, and Gianluca Manzo, organizers)