Category:F-Sigma Sets
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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.