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Counting multiple graphs in generalized Turán problems

Gerbner, Dániel (2025) Counting multiple graphs in generalized Turán problems. AUSTRALASIAN JOURNAL OF COMBINATORICS, 92 (3). pp. 244-265. ISSN 1034-4942

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Abstract

We are given graphs H1, …, Hk and F. Consider an F-free graph G on n vertices. What is the largest sum of the number of copies of Hi ? The case k = 1 has attracted a lot of attention. We also consider a colored variant, where the edges of G are colored with k colors. What is the largest sum of the number of copies of Hi in color i? Our motivation to study this colored variant is a recent result stating that the Turán number of the r-uniform Berge-F hypergraphs is at most the quantity defined above for k = 2, H1 = Kr and H2 = K2 . In addition to studying these new questions, we obtain new results for generalized Turán problems and also for Berge hypergraphs. © The author(s).

Item Type: Article
Subjects: Q Science / természettudomány > QA Mathematics / matematika
SWORD Depositor: MTMT SWORD
Depositing User: MTMT SWORD
Date Deposited: 05 Feb 2026 10:21
Last Modified: 05 Feb 2026 10:21
URI: https://real.mtak.hu/id/eprint/233368

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