Subsets

Symbol:

If set A is a subset of set B that means all elements in A are contained in B.
This relationship can also be written as , or "A subset B".
In this example B is the larger "containing" set.

Note

A set is always a subset of itself!

Subset Variants

There are two other variants of the subset.

Not Subset:

  • A ⊄ B — A is not a subset of B

Proper Subset:

  • A ⊂ B — A is a subset of B and is not equal to B