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
$$A \cup B =$$
{ executive branch, judicial branch, legislative branch, memorization, note taking, reading, testing, time management }
Symmetric Difference
$$A \ominus B =$$
{ executive branch, judicial branch, legislative branch, memorization, note taking, reading, testing, time management }
Difference
$$A - B =$$
{ memorization, note taking, reading, testing, time management }
Difference
$$B - A =$$
{ executive branch, judicial branch, legislative branch }
Cartesian Product
$$A \times B =$$
{ (memorization, executive branch),
(memorization, judicial branch),
(memorization, legislative branch),
(note taking, executive branch),
(note taking, judicial branch),
(note taking, legislative branch),
(reading, executive branch),
(reading, judicial branch),
(reading, legislative branch),
(testing, executive branch),
(testing, judicial branch),
(testing, legislative branch),
(time management, executive branch),
(time management, judicial branch),
(time management, legislative branch) }
Federal government of the United States