Last Updated:2025/11/26

In the poset of natural numbers, the set {n ∈ N | n ≥ 100} is cofinal because every natural number is less than or equal to some element of that set.

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In the poset of natural numbers, the set {n ∈ N | n ≥ 100} is cofinal because every natural number is less than or equal to some element of that set.

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自然数の部分順序集合において、集合 {n ∈ N | n ≥ 100} は、任意の自然数 m に対して m ≤ n を満たす n(かつ n ≥ 100)が集合内に存在するので、順序集合の任意の元より大きいか等しい元を含む部分集合である。

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