On Large Systems of Sets with No Large Weak Δ-subsystems

weak

Δ-system if the cardinality of the intersection of any two sets is the same. We elaborate a construction by Rödl and Thoma [9] and show that for large n, there exists a family ℱ of subsets of without weak Δ-systems of size 3 with .

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Received: October 1, 1997

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Kostochka, A., Rödl, V. On Large Systems of Sets with No Large Weak Δ-subsystems. Combinatorica 18, 235–240 (1998). https://doi.org/10.1007/PL00009819

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  • AMS Subject Classification (1991) Classes:  05D05