What is conjunto vacio?

Conjunto vacio, also known as the empty set, is a set that contains no elements. It is denoted by the symbol {} or Ø. The empty set is a fundamental concept in set theory and serves as a starting point for many mathematical theories and proofs. It is unique, as there is only one empty set. The empty set is a subset of every set, but it is not an element of any set except for the universal set that contains all sets. The empty set has no cardinality, which means it has no size or number of elements. It is a widely used concept in various branches of mathematics, including algebra, topology, and logic.