Coursera - Mathematical Biostatistics Bootcamp

Set notation in probability is slightly different to just set notation.
Sample space - upper case omega
Elementary event is lower case omega
Complement - the event did not occur.
un is nun. Cap flips to a cup.
Three rules that a probability measure has to follow.  Probability of the sample space has to be one.
Countable additivity implies finite additivity.
Probability Mass Function (PMF)