Sets to Number Theory 3.1

2 sets that contain the same elements (order is not important).

A set with n elements for some nonnegative integer n.

A set that is not finite.

A set with no elements.

Such as set A = {2, 3, 5. 12} and B = {2, 3, 4, 5, 9, 12}, every member of A is also a member of B. So A is said to be a subset of B.

Such as set A being a subset of B, but A ≠ B (there is at least 1 element of B that is not an element of A).

For a set S, forming a new set whose elements are all of the subset of S.

Denoted by (x, y), where x is the 1st component of the ordered pair and y is the 2nd component.