ZarankiewiczDB,

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

z(19,20) = 92

By deleting 2 rows and 1 column from the finite projective plane of order 4.

lower bound = 92, submitted on April 22nd, 2016 (link)

By Roman's bound with $p = 4$. [Rom75]

upper bound = 92, submitted on April 22nd, 2016 (link)

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