Some examples of true $F_{σδ}$ sets
Volume 86 / 2000
Colloquium Mathematicum 86 (2000), 203-207
DOI: 10.4064/cm-86-2-203-207
Abstract
Let K(X) be the hyperspace of a compact metric space endowed with the Hausdorff metric. We give a general theorem showing that certain subsets of K(X) are true $F_{σδ}$ sets.
