对于用调和数列的子列表示正有理数的问题，研究了一些特殊情况。
On expressing any positive rational number as sum of different terms of a given subsequence of harmonic sequence, some particular cases are studies.
对于用调和数列的子列表示正有理数的问题，研究了一些特殊情况。
On expressing any positive rational number as sum of different terms of a given subsequence of harmonic sequence, some particular cases are studies.
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