Union
$$A \cup B =$$
{ anal, emotional, genital, intellectual, latency, occupational, oral, phallic, physical, social, spiritual }
Symmetric Difference
$$A \ominus B =$$
{ anal, emotional, genital, intellectual, latency, occupational, oral, phallic, physical, social, spiritual }
Cartesian Product
$$A \times B =$$
{ (emotional, anal),
(emotional, genital),
(emotional, latency),
(emotional, oral),
(emotional, phallic),
(intellectual, anal),
(intellectual, genital),
(intellectual, latency),
(intellectual, oral),
(intellectual, phallic),
(occupational, anal),
(occupational, genital),
(occupational, latency),
(occupational, oral),
(occupational, phallic),
(physical, anal),
(physical, genital),
(physical, latency),
(physical, oral),
(physical, phallic),
(social, anal),
(social, genital),
(social, latency),
(social, oral),
(social, phallic),
(spiritual, anal),
(spiritual, genital),
(spiritual, latency),
(spiritual, oral),
(spiritual, phallic) }
Psychosexual development