In probability theory an event of probability 1 is said to happen almost surely. That is, A statement about outcomes is said to be true almost surely, or with probability 1, if and . Where is a point in the sample space , a -algebra? on , and a probability measure on , . (Williams 1991) In measure theory, such subsets are also known as full subsets. Their complements are known as null subsets or negligible subsets. See also: Wikipedia, Almost surely Williams, D. (1991). Probability with...