Union
$$A \cup B =$$
{ Opportunities, Strengths, Threats, Weaknesses, awareness, decision, recognition, recollection }
Symmetric Difference
$$A \ominus B =$$
{ Opportunities, Strengths, Threats, Weaknesses, awareness, decision, recognition, recollection }
Difference
$$A - B =$$
{ Opportunities, Strengths, Threats, Weaknesses }
Difference
$$B - A =$$
{ awareness, decision, recognition, recollection }
Cartesian Product
$$A \times B =$$
{ (Opportunities, awareness),
(Opportunities, decision),
(Opportunities, recognition),
(Opportunities, recollection),
(Strengths, awareness),
(Strengths, decision),
(Strengths, recognition),
(Strengths, recollection),
(Threats, awareness),
(Threats, decision),
(Threats, recognition),
(Threats, recollection),
(Weaknesses, awareness),
(Weaknesses, decision),
(Weaknesses, recognition),
(Weaknesses, recollection) }