Empty set

In set theory, the empty set is a set with no elements.

Backlinks

• Topic: Set Theory
  • the empty set
• The singleton set
  • Its dual is the empty set.
• Dual
  • Its dual is the empty set.
• The empty set and the void type
  • The empty set in set theory corresponds to the Void type in type theory or to false in logic. There's also the 0-category in category theory.