Category:Subcovers

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This category contains results about Subcovers.
Definitions specific to this category can be found in Definitions/Subcovers.

Let $S$ be a set.

Let $\UU$ be a cover for $S$.


A subcover of $\UU$ for $S$ is a set $\VV \subseteq \UU$ such that $\VV$ is also a cover for $S$.