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
$$A \cup B =$$
{ committee, conceptual, ecology, hierarchy, logical, matrix, physical }
Symmetric Difference
$$A \ominus B =$$
{ committee, conceptual, ecology, hierarchy, logical, matrix, physical }
Difference
$$A - B =$$
{ committee, ecology, hierarchy, matrix }
Difference
$$B - A =$$
{ conceptual, logical, physical }
Cartesian Product
$$A \times B =$$
{ (committee, conceptual),
(committee, logical),
(committee, physical),
(ecology, conceptual),
(ecology, logical),
(ecology, physical),
(hierarchy, conceptual),
(hierarchy, logical),
(hierarchy, physical),
(matrix, conceptual),
(matrix, logical),
(matrix, physical) }