bn:02531417n
Noun Concept
Categories: General topology, Topology
EN
cover  open cover  finite cover  open covering  open coverings
EN
In mathematics, and more particularly in set theory, a cover of a set X {\displaystyle X} is a family of subsets of X {\displaystyle X} whose union is all of X {\displaystyle X}. Wikipedia
English:
set theory
topology
mathematics
Definitions
Examples
Relations
Sources
EN
In mathematics, and more particularly in set theory, a cover of a set X {\displaystyle X} is a family of subsets of X {\displaystyle X} whose union is all of X {\displaystyle X}. Wikipedia
The mathematical concept of a collection of sets whose union contains each set as a subset Wikipedia Disambiguation
In topology Wikidata
Cover of a topological space consisting solely of open subsets Wikidata
A set (more often known as a family) of sets, whose union contains the given set. Wiktionary
Topology: family of sets. Wiktionary (translation)
EN
The open intervals are a cover for the real numbers. Wiktionary