Union
$$A \cup B =$$
{ Analytical, Argumentative, Expository, Narrative, Persuasive, courage, justice, prudence, temperance }
Symmetric Difference
$$A \ominus B =$$
{ Analytical, Argumentative, Expository, Narrative, Persuasive, courage, justice, prudence, temperance }
Difference
$$A - B =$$
{ Analytical, Argumentative, Expository, Narrative, Persuasive }
Difference
$$B - A =$$
{ courage, justice, prudence, temperance }
Cartesian Product
$$A \times B =$$
{ (Analytical, courage),
(Analytical, justice),
(Analytical, prudence),
(Analytical, temperance),
(Argumentative, courage),
(Argumentative, justice),
(Argumentative, prudence),
(Argumentative, temperance),
(Expository, courage),
(Expository, justice),
(Expository, prudence),
(Expository, temperance),
(Narrative, courage),
(Narrative, justice),
(Narrative, prudence),
(Narrative, temperance),
(Persuasive, courage),
(Persuasive, justice),
(Persuasive, prudence),
(Persuasive, temperance) }
Cardinal virtues