## Foundations of Mathematics## Set Theory |

## What is a universal set? |

A universal set actually applies to sets that are not universal, but are chosen from a specific type of entity, such as sets of numbers or letters. Thus, the set of all the elements in a set theory problem are collectively called the universal set. In reality, the “set of all things” does not exist because there is no largest or all-inclusive set, and so the true universal set is not recognized in standard set theory.