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On certain indestructibility of strong cardinals and a question of Hajnal

✍ Scribed by Moti Gitik; Saharon Shelah


Publisher
Springer
Year
1989
Tongue
English
Weight
403 KB
Volume
28
Category
Article
ISSN
0933-5846

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A multipartite tournament is an orientation of a complete multipartite graph. Simple derivations are obtained of the numbers of unlabeled acyclic and unicyclic multipartite tournaments, and unlabeled bipartite tournaments with exactly k cycles, which are pairwise vertex-disjoint.