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
$$A \cup B =$$
{ bitter, charismatic, legal, salty, savory, sour, sweet, traditional }
Symmetric Difference
$$A \ominus B =$$
{ bitter, charismatic, legal, salty, savory, sour, sweet, traditional }
Difference
$$A - B =$$
{ bitter, salty, savory, sour, sweet }
Difference
$$B - A =$$
{ charismatic, legal, traditional }
Cartesian Product
$$A \times B =$$
{ (bitter, charismatic),
(bitter, legal),
(bitter, traditional),
(salty, charismatic),
(salty, legal),
(salty, traditional),
(savory, charismatic),
(savory, legal),
(savory, traditional),
(sour, charismatic),
(sour, legal),
(sour, traditional),
(sweet, charismatic),
(sweet, legal),
(sweet, traditional) }
Authority (sociology)