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
$$A \cup B =$$
{ Opportunities, Strengths, Threats, Weaknesses, fetishism, monotheism, polytheism }
Symmetric Difference
$$A \ominus B =$$
{ Opportunities, Strengths, Threats, Weaknesses, fetishism, monotheism, polytheism }
Difference
$$A - B =$$
{ fetishism, monotheism, polytheism }
Difference
$$B - A =$$
{ Opportunities, Strengths, Threats, Weaknesses }
Cartesian Product
$$A \times B =$$
{ (fetishism, Opportunities),
(fetishism, Strengths),
(fetishism, Threats),
(fetishism, Weaknesses),
(monotheism, Opportunities),
(monotheism, Strengths),
(monotheism, Threats),
(monotheism, Weaknesses),
(polytheism, Opportunities),
(polytheism, Strengths),
(polytheism, Threats),
(polytheism, Weaknesses) }
Law of three stages