# Category:F-Sigma Sets

Jump to navigation
Jump to search

This category contains results about **$F_\sigma$ sets**.

Let $T = \struct {S, \tau}$ be a topological space.

An **$F_\sigma$ set ($F$-sigma set)** is a set which can be written as a countable union of closed sets of $T$.

## Pages in category "F-Sigma Sets"

The following 13 pages are in this category, out of 13 total.