A group is composed of the objects that satisfy a set of ordered relations. These relations can include either or both of membership, identity, and difference, and the set of objects that satisfy a given set of ordered relations is called a group.

Every group has at least one element, and the elements of a group are the subsets of the members of the group. In sets theory, the subsets of a group are called sets, and a set is a collection of distinct objects that are made up of at least one member.

There are two basic types of groups, those of finite and those of infinite size. It is impossible to know how large an infinite set is by counting all the elements, but it is possible to determine the size of a finite set. Thus, finite sets are easier to work with than infinite sets.

One can define the group of finite group as a subset of the group of a finite group. These sets of subsets are called finite groups. A set of finite groups can be constructed from the empty set, or they can be constructed out of the union of smaller finite sets.

Another type of group is the infinite groups, and the size of an infinite group is equal to the size of the largest infinite group. Every finite group consists of the members of its subgroups, while every infinite group consists of the members of its subgroups plus one. A set of finite groups can have elements that are members of other infinite sets.

Finite groups consist of the members of their own set. Infinite groups consist of the members of their own set together with the members of their subgroups. Sets that consist of their own set and their subgroups are called is called finite extension groups, while groups that consist of all the members of their subgroups together with their own set is called infinite extension groups.

There are many types of sets in the theory of sets. Each type is necessary for the other. A set does not exist without a subset, and a subset without an underlying set does not exist without an underlying subset. A set of one cannot exist without a subset and a set of two cannot exist without an underlying two subsets.

Infinite sets do not have subsets. The size of an infinite set is unlimited, because there are no bounds on the size of any set. As long as an infinite set has members, there are always infinite numbers of them.

Sets theory is used in many different ways. It helps us understand certain patterns in nature, such as the Fibonacci sequence and the sequence of primes. It also helps us to determine the size and shape of a space, like the number of protons in a proton or the number of electrons in an atom.

There are some set types that are useful in a variety of applications. These include the set of natural numbers and the set of real numbers, the set of rational numbers, and the set of real and irrational numbers.

Sets theory is an interesting subject and can be studied by anyone. There are many books and articles on it on the internet.