Union
$$A \cup B =$$
{ Inheritance, hearing, selection, sight, smell, taste, time, touch, variation }
Symmetric Difference
$$A \ominus B =$$
{ Inheritance, hearing, selection, sight, smell, taste, time, touch, variation }
Difference
$$A - B =$$
{ Inheritance, selection, time, variation }
Difference
$$B - A =$$
{ hearing, sight, smell, taste, touch }
Cartesian Product
$$A \times B =$$
{ (Inheritance, hearing),
(Inheritance, sight),
(Inheritance, smell),
(Inheritance, taste),
(Inheritance, touch),
(selection, hearing),
(selection, sight),
(selection, smell),
(selection, taste),
(selection, touch),
(time, hearing),
(time, sight),
(time, smell),
(time, taste),
(time, touch),
(variation, hearing),
(variation, sight),
(variation, smell),
(variation, taste),
(variation, touch) }
Sense