The logarithmic-degree conjecture for cycles with linearly many chords

From papers

Let GG be a graph on nn vertices, and let CC be a positive constant. A cycle with linearly many chords is a cycle on [200 [200~\ell vertices having at least [201 /2[201~\ell/2 chords.

Cycle-with-chords conjecture. If GG has average degree at least Cloglog(n)C\log\log(n), then GG contains a cycle CC on [202 [202~\ell vertices with at least [203 /2[203~\ell/2 chords, for some [204 4[204~\ell\geqslant 4.

The surrounding discussion presents this as a conjectural strengthening of the paper's results on cycles with almost linearly many chords; it also suggests that the regular-graph case may be a natural first step. The source gives no evidence that the conjecture has been resolved.

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Sources & referencesView supporting material

Primary source

Nemanja Draganić and António Girão, “Cycles with almost linearly many chords”, arXiv:2601.08769 (2026).

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