Union
$$A \cup B =$$
{ Formal, Natural, Social, becoming, being, cause, effect, essence, existence, life, many, mechanism, one, universal }
Symmetric Difference
$$A \ominus B =$$
{ Formal, Natural, Social, becoming, being, cause, effect, essence, existence, life, many, mechanism, one, universal }
Difference
$$A - B =$$
{ becoming, being, cause, effect, essence, existence, life, many, mechanism, one, universal }
Cartesian Product
$$A \times B =$$
{ (becoming, Formal),
(becoming, Natural),
(becoming, Social),
(being, Formal),
(being, Natural),
(being, Social),
(cause, Formal),
(cause, Natural),
(cause, Social),
(effect, Formal),
(effect, Natural),
(effect, Social),
(essence, Formal),
(essence, Natural),
(essence, Social),
(existence, Formal),
(existence, Natural),
(existence, Social),
(life, Formal),
(life, Natural),
(life, Social),
(many, Formal),
(many, Natural),
(many, Social),
(mechanism, Formal),
(mechanism, Natural),
(mechanism, Social),
(one, Formal),
(one, Natural),
(one, Social),
(universal, Formal),
(universal, Natural),
(universal, Social) }