Cartesian Product set of ordered pairs from A and B 1 2 3 4 1 3 1 4 2 3 2 4 A. To learn more about Sets enrol in our full course now. Boldface capital letters are sometimes used to identify certain number sets such as N for.
These objects are sometimes called elements or members of the set.
All the other sets are considered to be the subsets of Universal set. P1 2 1 2 1 2 A B. This would have to be defined by the context. Cardinality of countable ordinal numbers set.