Br J Philos Sci
2018[Jun]; 69
(2
): 509-552
PMID29977092
show ga
Non-Archimedean probability functions allow us to combine regularity with perfect
additivity. We discuss the philosophical motivation for a particular choice of
axioms for a non-Archimedean probability theory and answer some philosophical
objections that have been raised against infinitesimal probabilities in general.
1?Introduction2?The Limits of Classical Probability Theory??2.1?Classical
probability functions??2.2?Limitations??2.3?Infinitesimals to the rescue?3?NAP
Theory??3.1?First four axioms of NAP??3.2?Continuity and conditional
probability??3.3?The final axiom of NAP??3.4?Infinite sums??3.5?Definition of NAP
functions via infinite sums??3.6?Relation to numerosity theory4?Objections and
Replies??4.1?Cantor and the Archimedean property??4.2?Ticket missing from an
infinite lottery??4.3?Williamson's infinite sequence of coin tosses??4.4?Point
sets on a circle??4.5?Easwaran and Pruss5?Dividends??5.1?Measure and
utility??5.2?Regularity and uniformity??5.3?Credence and chance??5.4?Conditional
probability6?General Considerations??6.1?Non-uniqueness??6.2?InvarianceAppendix?.