Density (of a topological space)
From Encyclopedia of Mathematics
2020 Mathematics Subject Classification: Primary: 54A25 [MSN][ZBL]
density character
One of the cardinal characteristics of a topological space. The minimal cardinality of a dense set.
A separable space is one with countable density.
References
- Mary Ellen Rudin, Lectures on Set Theoretic Topology, American Mathematical Society (1975) ISBN 0-8218-1673-X Zbl 0318.54001
How to Cite This Entry:
Density (of a topological space). Encyclopedia of Mathematics. URL: http://encyclopediaofmath.org/index.php?title=Density_(of_a_topological_space)&oldid=42663
Density (of a topological space). Encyclopedia of Mathematics. URL: http://encyclopediaofmath.org/index.php?title=Density_(of_a_topological_space)&oldid=42663