ABSTRACT
When building a model of any experiment, we first specify the set of all possible nondecomposable outcomes which may occur as a result of the experiment. We call such a set a sample space, or a space of elementary outcomes. A traditional notation for a sample space is Ω, and an element of this space (called an individual or elementary outcome) is denoted by ω. So, Ω = {ω}. Formally, Ω is just a set of elements of an arbitrary nature. However, for a particular experiment, each ω designates a possible outcome.
