R_0 countable spaces are G_delta

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A community database of topological counterexamples

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Closed Almanzoris closed 2 hours ago

Almanzoris commented 2 hours ago

@danflapjax Good that you have noticed it! I can't believe I missed to edit that part. But I meant open sets.

Edit: Nice! I have just seen that you realized back then and you have fixed it in #966.