Last Updated:2025/12/02
Sentence

組合せ論では、有限集合の真部分集合の個数を数えることはよくある練習問題です。

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In combinatorics, counting the number of proper subsets of a finite set is a common exercise.

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In combinatorics, counting the number of proper subsets of a finite set is a common exercise.

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Related words

proper subsets

Noun
form-of plural
Japanese Meaning
「proper subsets」は、「proper subset」(真部分集合)の複数形です。つまり、ある集合の部分集合で、元の集合と全く同じではない(すなわち、一部が欠けている)部分集合を指します。
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組合せ論では、有限集合の真部分集合の個数を数えることはよくある練習問題です。

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