Subbase
From Encyclopedia of Mathematics
(Redirected from Pre-base)
2020 Mathematics Subject Classification: Primary: 54A05 [MSN][ZBL]
pre-base
A family $\gamma$ of open subsets of a topological space $X$ such that the totality of all sets which are intersections of a finite number of elements of $\gamma$ forms a base of $X$.
References
| [a1] | R. Engelking, "General topology" , Heldermann (1989) |
How to Cite This Entry:
Pre-base. Encyclopedia of Mathematics. URL: http://encyclopediaofmath.org/index.php?title=Pre-base&oldid=39442
Pre-base. Encyclopedia of Mathematics. URL: http://encyclopediaofmath.org/index.php?title=Pre-base&oldid=39442