Union
$$A \cup B =$$
{ avoiding, body, feeling, getting, ruling, sensing, socially useful, soul, spirit, thinking, willing }
Symmetric Difference
$$A \ominus B =$$
{ avoiding, body, feeling, getting, ruling, sensing, socially useful, soul, spirit, thinking, willing }
Difference
$$B - A =$$
{ body, feeling, sensing, soul, spirit, thinking, willing }
Cartesian Product
$$A \times B =$$
{ (avoiding, body),
(avoiding, feeling),
(avoiding, sensing),
(avoiding, soul),
(avoiding, spirit),
(avoiding, thinking),
(avoiding, willing),
(getting, body),
(getting, feeling),
(getting, sensing),
(getting, soul),
(getting, spirit),
(getting, thinking),
(getting, willing),
(ruling, body),
(ruling, feeling),
(ruling, sensing),
(ruling, soul),
(ruling, spirit),
(ruling, thinking),
(ruling, willing),
(socially useful, body),
(socially useful, feeling),
(socially useful, sensing),
(socially useful, soul),
(socially useful, spirit),
(socially useful, thinking),
(socially useful, willing) }
Four temperaments