$G_\delta$ Set
Definition
A set $B \subseteq \mathbb{R}$ is called a $G_{\delta}$ set if it can be written as the countable intersection of open_sets.
G-delta set
Table of Contents
Connected Notes
⤢
A set $B \subseteq \mathbb{R}$ is called a $G_{\delta}$ set if it can be written as the countable intersection of open_sets.