Dear all, we are pleased to inform you that the web conference The Mathematics of Subjective Probability will be held on 1, 2 and 3 september. Here attached you can find the detailed program of the conference. Attendance is of course free and unrestricted and the details on how to connect on-line will be published shortly on the conference website https://www.msp2021.campus.unimib.it/home Gianluca Cassese, Pietro Rigo, Barbara Vantaggi