The Journal "Decisions in Economics and Finance" is announcing a special issue on "The Mathematics of Subjective Probability". The main topics are: Probability theory Theory of choice under uncertainty Game theory and learning Mean fields games Stochastic optimization and control Optimal transport Possible connections with economic phenomena would be greatly appreciated. The special issue follows the conference that took place in Milan in september 2023: https://www.msp2023.campus.unimib.it/ Submission will take place through the journal platform, upon specifying the special issue of interest. The deadline is december 31st 2023. Gianluca Cassese, Federica Masiero, Pietro Rigo, Barbara Vantaggi