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De Finetti's construction as a categorical limit

2020/03/04 by Jacobs, Bart, Staton, Sam
#Category Theory (math.CT) #FOS: Mathematics #Probability (math.PR)

paper · doi:10.48550/arxiv.2003.01964

Abstract

This paper reformulates a classical result in probability theory from the 1930s in modern categorical terms: de Finetti's representation theorem is redescribed as limit statement for a chain of finite spaces in the Kleisli category of the Giry monad. This new limit is used to identify among exchangeable coalgebras the final one.

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