👉 In mathematics, a compactable is a subset of a metric space that is closed and bounded. A compact set is a set whose interior has nonempty interior. In other words, it contains an open ball around every point. For example: - The set $A = \{ (x, y) \in \mathbb{R}^2 : x^2 + y^2 < 1\}$ is compactable because the interior of any ball centered at $(0,0
