Degree-power extremal conjecture for bounded-matching families

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Let k≥2k\geq2, s≥1s\geq1, 1≤r≤k−11\leq r\leq k-1, and let p≥1p\geq1 be real. Suppose that

n≥(2s+1)k−s.n\geq(2s+1)k-s.

If F⊆([n]k)\mathcal F\subseteq\binom{[n]}k satisfies ν(F)≤s\nu(\mathcal F)\leq s, let BS\mathcal B_S denote the family of all kk-sets meeting a fixed ss-set SS, and let ℓr,p\ell_{r,p} be the degree-power quantity used in the paper. Bounded-matching degree-power conjecture.

ℓr,p(F)≤ℓr,p(BS).\ell_{r,p}(\mathcal F)\leq\ell_{r,p}(\mathcal B_S).

Moreover, equality holds if and only if F\mathcal F is isomorphic to BS\mathcal B_S. This extends the paper's bounded-matching result from codegrees to arbitrary nontrivial degree levels.

References

Primary source

Mengyu Cao, Mei Lu and Haixiang Zhang, “Convex Transference for Degree Powers in Extremal Set Systems”, arXiv:2607.28616 (2026).

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