ABSTRACT
In formal probability, events are considered as subsets of a given set Ω. If {A j | j ∈ J} is a family of subsets of Ω, then their intersection ( P .1.1 ) ∩ j ∈ J A j : = { ω ∈ Ω| ω ∈ A j for all j ∈ J } https://s3-euw1-ap-pe-df-pch-content-public-p.s3.eu-west-1.amazonaws.com/9780203742013/69a53f4e-97e6-48d7-bf94-69ab32e54fc6/content/equp_1_1.tif"/>
