ZarankiewiczDB,

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

z(14,14) = 56

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Found by hand using Matrix 2171. The upper left block is color class 1, and the lower right block is the transpose of color class 2.

lower bound = 56, submitted by Andrew Kay on April 26th, 2016 (link, raw)

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weight = 56, submitted on April 22nd, 2016 (link, raw)

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