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
$$A \cup B =$$
{ ethos, kairos, logopoeia, logos, melopoeia, pathos, phanopoeia }
Symmetric Difference
$$A \ominus B =$$
{ ethos, kairos, logopoeia, logos, melopoeia, pathos, phanopoeia }
Difference
$$A - B =$$
{ logopoeia, melopoeia, phanopoeia }
Difference
$$B - A =$$
{ ethos, kairos, logos, pathos }
Cartesian Product
$$A \times B =$$
{ (logopoeia, ethos),
(logopoeia, kairos),
(logopoeia, logos),
(logopoeia, pathos),
(melopoeia, ethos),
(melopoeia, kairos),
(melopoeia, logos),
(melopoeia, pathos),
(phanopoeia, ethos),
(phanopoeia, kairos),
(phanopoeia, logos),
(phanopoeia, pathos) }
Modes of persuasion