Dense regular Maxwell-sharpness conjecture

Prove that every k-regular n-vertex graph with k≥(3n−6)/4 is Maxwell-sharp, meaning that its rigidity dimension equals its Maxwell dimension.

Background

This conjecture is the regular dense specialization of the broader Krivelevich–Lew–Michaeli minimum-degree conjecture. Maxwell’s edge-count condition is automatically paired with the relevant connectivity condition in this degree range, but the sufficiency of these conditions remains unresolved beyond the cases proved in the paper.

References

Beyond these results, \cref{con:KLM} remains wide open, even in the regular dense setting of \cref{con:KLM-regular}.

Rigidity of complements of bounded-degree graphs  (2609.05058 - Haslegrave et al., 4 Sep 2026) in Conjecture, Section 1; unresolved status stated later in Section 1