fully T4
A topological space X is said to be fully T4 if every open cover of X
has star refinement.
A topological space is said to be fully normal if it is a T1 space and is fully T4.
For example, every pseudometric space is fully T4.
We have the following implications:
Lindelöf T3⇒ paracompact and T3⇒ fully T4⇒T4⇒ uniformizable ⇒T3 ,
and
fully normal ⇔ paracompact regular.
Title | fully T4 |
---|---|
Canonical name | FullyT4 |
Date of creation | 2013-03-22 17:09:43 |
Last modified on | 2013-03-22 17:09:43 |
Owner | Mathprof (13753) |
Last modified by | Mathprof (13753) |
Numerical id | 7 |
Author | Mathprof (13753) |
Entry type | Definition |
Classification | msc 54D15 |
Defines | fully normal |