ZarankiewiczDB,

an online database of Zarankiewicz numbers. home; recent; tables; submit; theorems & references

z(5,9) = 18

By adding a column of weight 1 to z(5,8).

lower bound = 18, submitted on April 22nd, 2016 (link)

By Roman's bound with $p = 2$. [Rom75]

upper bound = 18, submitted on April 22nd, 2016 (link)

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