ZarankiewiczDB,

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

z(13,15) = 55

11111
11111
1111
1111
1111
1111
1111
1111
1111
1111
1111
1111
11111

Found by the scaffold algorithm.

(0.041739662 seconds, score = 55, 202 recursive calls, max depth = 14)

weight = 55, submitted by Andrew Kay on April 22nd, 2016 (link, raw)

By the density principle on z(12,15).

upper bound = 55, submitted on April 22nd, 2016 (link)

Submit a result or comment?