Unavoidable subprojections in union-closed set systems of infinite breadth
Unavoidable subprojections in union-closed set systems of infinite breadth
复制标题
无限广度并闭集系统中不可避免的子投影
DOI:
10.1016/j.ejc.2021.103311
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发表时间:
2021
影响因子:
1
通讯作者:
Pham, Hung Le
中科院分区:
文献类型:
--
作者:
Choi, Yemon;Ghandehari, Mahya;Pham, Hung Le
We consider union-closed set systems with infinite breadth, focusing on three particular configurations T max (E), T min (E) and T ort (E). We show that these three configurations are not isolated examples; in any given union-closed set system of infinite breadth, at least one of these three configurations will occur as a subprojection. This characterizes those union-closed set systems which have infinite breadth, and is the first general structural result for such set systems.
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影响因子:
0.7
作者:
Yemon Choi
通讯作者:
Yemon Choi
DOI:
--
发表时间:
1986
期刊:
影响因子:
--
作者:
B. Johnson
通讯作者:
B. Johnson
影响因子:
5.3
作者:
Richard S. Katz
通讯作者:
Richard S. Katz
DOI:
--
发表时间:
1971
期刊:
影响因子:
--
作者:
J. Lawson
通讯作者:
J. Lawson
影响因子:
0.7
作者:
Choi, Yemon;Ghandehari, Mahya;Pham, Hung Le
通讯作者:
Pham, Hung Le