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math.CO2025
-almost cross--intersecting families for finite sets
Dehai Liu, Kaishun Wang, Tian Yao
Two families and of -subsets of an -set are called -almost cross--intersecting if each member in (resp. ) is -…
math.CO2025
Semicomplete multipartite weakly distance-regular digraphs
Shuang Li, Yuefeng Yang, Kaishun Wang
A digraph is semicomplete multipartite if its underlying graph is a complete multipartite graph. As a special case of semicomplete multipartite digraphs, Jørgensen et al. \cite{JG1…