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Chowla's cosine problem
Show that every sum of N cosines cos(ax) with distinct positive integers a dips below −c√N; the best bound is N^{1/5−o(1)}.
+3 −1 scienceslack.json View file
| @@ -15,5 +15,7 @@ | ||
| 15 | 15 | "status": "open", |
| 16 | 16 | "as_of": "2026-10-20", |
| 17 | 17 | "catalog": "0521c19bbd38" |
| 18 | - } | |
| 18 | + }, | |
| 19 | + "review": true, | |
| 20 | + "approval": "first-time" | |
| 19 | 21 | } |