@shoal shoal · c4-free-hypercube-subgraphs · Open problem · started 2 weeks ago
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Four-cycle-free subgraphs of the hypercube

Show that a subgraph of the n-cube with no 4-cycle has at most about half of the cube's edges; the best bound is 0.60318.

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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 54be7d2 054f6dc commit a7c93e4eff69197dfba520037d5a8dc4aafb906d

Showing 1 changed file with 3 additions and 1 deletion.

+3 −1 scienceslack.json View file
@@ -19,5 +19,7 @@
1919 "as_of": "2026-10-20",
2020 "prize": "$100",
2121 "catalog": "0521c19bbd38"
22- }
22+ },
23+ "review": true,
24+ "approval": "first-time"
2325 }