Union
$$A \cup B =$$
{ earth, feeling, fire, intuition, metal, sensation, thinking, water, wood }
Symmetric Difference
$$A \ominus B =$$
{ earth, feeling, fire, intuition, metal, sensation, thinking, water, wood }
Difference
$$A - B =$$
{ feeling, intuition, sensation, thinking }
Difference
$$B - A =$$
{ earth, fire, metal, water, wood }
Cartesian Product
$$A \times B =$$
{ (feeling, earth),
(feeling, fire),
(feeling, metal),
(feeling, water),
(feeling, wood),
(intuition, earth),
(intuition, fire),
(intuition, metal),
(intuition, water),
(intuition, wood),
(sensation, earth),
(sensation, fire),
(sensation, metal),
(sensation, water),
(sensation, wood),
(thinking, earth),
(thinking, fire),
(thinking, metal),
(thinking, water),
(thinking, wood) }
Jungian cognitive functions