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作 者:Xiang Qian LI Ru Hong HU Zi Hong TIAN
机构地区:[1]Institute of Mathematics, Beijing Jiaotong University, Beijing 100044, P. R. China [2]College of Mathematics and Information Science, Hebei Normal University, Shijiazhuang 050024, P. R. China
出 处:《Acta Mathematica Sinica,English Series》2018年第11期1703-1717,共15页数学学报(英文版)
基 金:Supported by National Natural Science Foundation of China(Grant Nos.11471096 and 11771119)
摘 要:In this article, we establish the existence of an LHMTS(mv) for v ≡ 2 (mod 6) and m≡ 3 (mod 6). Thus there exists an LHMTS(mv) if and only if v(v-1)m2 ≡ 0 (mod 3) except possibly for v=6, m≡ 1, 5 (mod 6) and m≠1. In the similar way, the existence of LHDTS(mv) is completely determined, i.e., there exists an LHDTS(mv) if and only if v(v-1)m2 ≡ 0 (mod 3).In this article, we establish the existence of an LHMTS(mv) for v ≡ 2 (mod 6) and m≡ 3 (mod 6). Thus there exists an LHMTS(mv) if and only if v(v-1)m2 ≡ 0 (mod 3) except possibly for v=6, m≡ 1, 5 (mod 6) and m≠1. In the similar way, the existence of LHDTS(mv) is completely determined, i.e., there exists an LHDTS(mv) if and only if v(v-1)m2 ≡ 0 (mod 3).
关 键 词:Holey Mendelsohn triple system holey directed triple system large set
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