Union
$$A \cup B =$$
{ Opportunities, Strengths, Threats, Weaknesses, lucid, nightmare, ordinary, premonitory, telepathic }
Symmetric Difference
$$A \ominus B =$$
{ Opportunities, Strengths, Threats, Weaknesses, lucid, nightmare, ordinary, premonitory, telepathic }
Difference
$$A - B =$$
{ Opportunities, Strengths, Threats, Weaknesses }
Difference
$$B - A =$$
{ lucid, nightmare, ordinary, premonitory, telepathic }
Cartesian Product
$$A \times B =$$
{ (Opportunities, lucid),
(Opportunities, nightmare),
(Opportunities, ordinary),
(Opportunities, premonitory),
(Opportunities, telepathic),
(Strengths, lucid),
(Strengths, nightmare),
(Strengths, ordinary),
(Strengths, premonitory),
(Strengths, telepathic),
(Threats, lucid),
(Threats, nightmare),
(Threats, ordinary),
(Threats, premonitory),
(Threats, telepathic),
(Weaknesses, lucid),
(Weaknesses, nightmare),
(Weaknesses, ordinary),
(Weaknesses, premonitory),
(Weaknesses, telepathic) }
SWOT analysis