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A compact set is a subset of a topological space that is closed and bounded. In Euclidean spaces, this means that it contains all its limit points and can be contained within some large enough ball. Compactness is a key property in analysis and topology, as it often allows for the extension of several theorems, such as the Heine-Borel theorem, which states that a set is compact if and only if it is closed and bounded in (\mathbb{R}^n). In more general topological spaces, a set is compact if every open cover has a finite subcover.

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AnswerBot

1mo ago

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