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Extremal graphs without exponentially-small bicliques

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 نشر من قبل Boris Bukh
 تاريخ النشر 2021
  مجال البحث
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 تأليف Boris Bukh




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The Turan problem asks for the largest number of edges in an $n$-vertex graph not containing a fixed forbidden subgraph $F$. We construct a new family of graphs not containing $K_{s,t}$, for $t= C^s$, with $Omega(n^{2-1/s})$ edges matching the upper bound of Kovari, Sos and Turan.



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