7. Notions of countability
Countability (resp. uncountability) is a concept that deals with the existence and properties of a countable (resp. uncountable) set in a topological space (Cantor, 1874, 1878, 1883).
A countable separated topological space T3 is separated T4 (p. 183 of ).
7.1 Topological spaces with countable bases of neighborhoods
Definition (topological space with countable bases of neighborhoods (Hausdorff, 1914)). A topological space has a countable basis of neighborhoods (1st countable topological...
Exclusive to subscribers. 97% yet to be discovered!
Already subscribed? Log in!
Notions of countability
Notions of compactness
Bibliography
Exclusive to subscribers. 97% yet to be discovered!
Already subscribed? Log in!
Article included in this offer
"Mathematics"
(
168 articles
)
Updated and enriched with articles validated by our scientific committees
A set of exclusive tools to complement the resources
