最終更新日：2025/12/03
During the topology seminar, the professor used the Lindelöf covering theorem to show that every open cover of a subset of Euclidean n-space admits a countable subcover.
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During the topology seminar, the professor used the Lindelöf covering theorem to show that every open cover of a subset of Euclidean n-space admits a countable subcover.
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