Equality
$$A \neq B$$
A is not equal to B
Subset
$$A \not\subseteq B$$
A is not a subset of or equal to B
Superset
$$A \not\supseteq B$$
A is not a superset of or equal to B
Intersection
$$A \cap B =$$
{ }
Union
$$A \cup B =$$
{ equality, fable, fairy-tale, folk-tale, fraternity, liberty, myth, saga }
Symmetric Difference
$$A \ominus B =$$
{ equality, fable, fairy-tale, folk-tale, fraternity, liberty, myth, saga }
Difference
$$A - B =$$
{ fable, fairy-tale, folk-tale, myth, saga }
Difference
$$B - A =$$
{ equality, fraternity, liberty }
Cartesian Product
$$A \times B =$$
{ (fable, equality),
(fable, fraternity),
(fable, liberty),
(fairy-tale, equality),
(fairy-tale, fraternity),
(fairy-tale, liberty),
(folk-tale, equality),
(folk-tale, fraternity),
(folk-tale, liberty),
(myth, equality),
(myth, fraternity),
(myth, liberty),
(saga, equality),
(saga, fraternity),
(saga, liberty) }
Liberté, égalité, fraternité