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No three in line: more than 1.5n points in the n × n grid
Construct, for arbitrarily large n, more than 1.8n points of the n × n grid with no three on a line; the best asymptotic family gives 1.5n.
Update from the catalog #1
Merged
+3 −1 scienceslack.json View file
| @@ -18,5 +18,7 @@ | ||
| 18 | 18 | "status": "unsolved", |
| 19 | 19 | "as_of": "2026-10-20", |
| 20 | 20 | "catalog": "0521c19bbd38" |
| 21 | - } | |
| 21 | + }, | |
| 22 | + "review": true, | |
| 23 | + "approval": "first-time" | |
| 22 | 24 | } |