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On the size of shadow-added intersecting families
European Journal of Combinatorics ( IF 1.0 ) Pub Date : 2020-09-16 , DOI: 10.1016/j.ejc.2020.103243 Peter Frankl
中文翻译:
影子相交家庭的规模
更新日期:2020-09-16
European Journal of Combinatorics ( IF 1.0 ) Pub Date : 2020-09-16 , DOI: 10.1016/j.ejc.2020.103243 Peter Frankl
Let , . For a family of -subsets of let be the immediate shadow (cf. Definition 1.1) of . Suppose that for all . We conjecture that and prove it for , and also for . This problem is somewhat unusual but we exhibit deep connections to the Erdős–Ko–Rado Theorem and to the Erdős Matching Conjecture. Some related problems are also considered.
中文翻译:
影子相交家庭的规模
让 , 。对于一个家庭 的 -的子集 让 是...的直接阴影(参见定义1.1) 。假设 对所有人 。我们推测 并证明 , 并且也 。这个问题多少有些特殊,但是我们与Erdős-Ko-Rado定理和Erdős匹配猜想有着深厚的联系。还考虑了一些相关问题。