Abstract

This article is mainly composed of two discussions. First, we introduce event-expressions, individual constants of a new type referring to events, not things. We learn this from Davidson’s famous formulation of event-sentences (§§1-3). The first half or more of this article is occupied with this discussion. The second half is devoted to the creation of a new analysis of probability, especially conditional probability. As seen in the author’s other work (Kaneko 2022), probability theory can be reconstructed with predicate logic in the name of inductive logic. This article includes its development and its application to the notion of conditional probability (§§4-6).