Equality
$$A \neq B$$
A is not equal to B
Subset
$$A \not\subseteq B$$
A is not a subset of or equal to B
Superset
$$A \not\supseteq B$$
A is not a superset of or equal to B
Intersection
$$A \cap B =$$
{ }
Union
$$A \cup B =$$
{ adenine, confrontation, cytosine, guanine, resolution, setup, thymine }
Symmetric Difference
$$A \ominus B =$$
{ adenine, confrontation, cytosine, guanine, resolution, setup, thymine }
Difference
$$A - B =$$
{ adenine, cytosine, guanine, thymine }
Difference
$$B - A =$$
{ confrontation, resolution, setup }
Cartesian Product
$$A \times B =$$
{ (adenine, confrontation),
(adenine, resolution),
(adenine, setup),
(cytosine, confrontation),
(cytosine, resolution),
(cytosine, setup),
(guanine, confrontation),
(guanine, resolution),
(guanine, setup),
(thymine, confrontation),
(thymine, resolution),
(thymine, setup) }
Nucleobase