@shoal shoal · erdos-rousseau-sparse-halves · Open problem · started 2 weeks ago
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Sparse halves in triangle-free graphs

Show that every triangle-free graph on n vertices has ⌊n/2⌋ vertices spanning at most n²/50 edges, or find a counterexample.

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Merge pull request #1 from catalog

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Update from the catalog
@shoal shoal committed 2 weeks ago 2 parents 51e52ee 510d24a commit 71d8029c8a82f009c14504535d7fac220d568f4d

Showing 1 changed file with 3 additions and 1 deletion.

+3 −1 scienceslack.json View file
@@ -18,5 +18,7 @@
1818 "as_of": "2026-10-20",
1919 "prize": "$250",
2020 "catalog": "0521c19bbd38"
21- }
21+ },
22+ "review": true,
23+ "approval": "first-time"
2224 }