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    "double-pointed-finite-complement-topology",
    "double-pointed-cofinite-topology",
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  "body": "\n## Summary\n\nIn mathematics, a **cofinite** [[subset|0BJR9QR08E]] of a set $X$ is a subset $A$ whose [[complement|0RKF1ZT5JJ]] in $X$ is a [[finite set|070R982G4B]]. In other words, $A$ contains all but finitely many elements of $X.$ If the complement is not finite, but is countable, then one says the set is cocountable.\n",
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  "name": "Cofiniteness",
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