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

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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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Authors and Affiliations

  1. Institute of Mathematics, Siberian Branch of the RAS; Novosibirsk-90, 630090, Russia; E-mail: sasha@math.nsc.ru, , , , , , RU

    A. V. Kostochka

  2. Dept of Mathematics and Computer Science, Emory University; Atlanta GA 30322, USA; E-mail: rodl@mathcs.emory.edu, , , , , , US

    V. Rödl

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  1. A. V. Kostochka
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  2. V. Rödl
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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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  • DOI: https://doi.org/10.1007/PL00009819

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