GUAN Huanhuan, ZENG Xiangneng, YUAN Pingzhi. Description of the Invariant F(5) of ZeroSumFree Sequence[J]. Acta Scientiarum Naturalium Universitatis SunYatseni, 2010,49(3):1-4.
GUAN Huanhuan, ZENG Xiangneng, YUAN Pingzhi. Description of the Invariant F(5) of ZeroSumFree Sequence[J]. Acta Scientiarum Naturalium Universitatis SunYatseni, 2010,49(3):1-4.DOI:
zerosumfree sequence of elements in G. Let f(S) denote the number of elements in G which can be expressed as the sum over a nonempty subsequence of S. When the length of Sequals to 5
the result f(S)≥13 is obtained. All cases of S whenf(S)=13 are described.