Namespaces
Variants
Actions

F-sigma

From Encyclopedia of Mathematics
Revision as of 13:29, 16 August 2012 by Camillo.delellis (talk | contribs)
Jump to: navigation, search

2020 Mathematics Subject Classification: Primary: 28A33 [MSN][ZBL]

In a topological space $X$ a subset which is the countable union of closed sets. See Borel set and also G-delta.

How to Cite This Entry:
F-sigma. Encyclopedia of Mathematics. URL: http://encyclopediaofmath.org/index.php?title=F-sigma&oldid=27599