Probability event notation | Vose Software

Probability event notation

The following notation is developed from set theory and is used extensively to represent probabilities of events and their relationships.

 The probability that event A occurs or The probability that event A does not occur. AC is called the compliment of A. The probability that events A and B both occur The probability that either events A or B occur The probability that event A occurs given that event B has occurred The null event, i.e. impossibility so, for example and The probability of all events Ai occurring The probability of any event Ai occurring e is the set of all possible things (i.e. anything), so P(e) = 1