Set Cover
# Definition
Let $X$ be a Set and let $\mathcal{S}$ be a collection of subsets of $X$. Then $\mathcal{S}$ is a Set Cover of $X$ if $\bigcup\limits \mathcal{S} = X$.
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Let $X$ be a Set and let $\mathcal{S}$ be a collection of subsets of $X$. Then $\mathcal{S}$ is a Set Cover of $X$ if $\bigcup\limits \mathcal{S} = X$.