Union
$$A \cup B =$$
{ Comedy, Overcoming the Monster, Rags to Riches, Rebirth, The Quest, Tragedy, Voyage and Return, activist, pragmatist, reflector, theorist }
Symmetric Difference
$$A \ominus B =$$
{ Comedy, Overcoming the Monster, Rags to Riches, Rebirth, The Quest, Tragedy, Voyage and Return, activist, pragmatist, reflector, theorist }
Difference
$$A - B =$$
{ Comedy, Overcoming the Monster, Rags to Riches, Rebirth, The Quest, Tragedy, Voyage and Return }
Cartesian Product
$$A \times B =$$
{ (Comedy, activist),
(Comedy, pragmatist),
(Comedy, reflector),
(Comedy, theorist),
(Overcoming the Monster, activist),
(Overcoming the Monster, pragmatist),
(Overcoming the Monster, reflector),
(Overcoming the Monster, theorist),
(Rags to Riches, activist),
(Rags to Riches, pragmatist),
(Rags to Riches, reflector),
(Rags to Riches, theorist),
(Rebirth, activist),
(Rebirth, pragmatist),
(Rebirth, reflector),
(Rebirth, theorist),
(The Quest, activist),
(The Quest, pragmatist),
(The Quest, reflector),
(The Quest, theorist),
(Tragedy, activist),
(Tragedy, pragmatist),
(Tragedy, reflector),
(Tragedy, theorist),
(Voyage and Return, activist),
(Voyage and Return, pragmatist),
(Voyage and Return, reflector),
(Voyage and Return, theorist) }
The Seven Basic Plots