4 papers
math.CO2026
Upper-shadow comparisons on the slice and the Frankl--Tokushige product conjectures
Fan Chang, Hong Liu, Miao Liu
Let , and let be the family of all -sets containing a member of . Writing $μ_k(\mathcal{F})=|\…
math.CO2026
The sharp diagonal spectral correlation inequality on the discrete cube
Fan Chang, Hong Liu, Miao Liu
We prove the sharp diagonal spectral correlation conjecture of Friedgut, Kahn, Kalai and Keller, proposed in their Fourier-analytic approach to Chvátal's conjecture. For every pair…
math.CO2026
A sharp -biased product bound for -cross-intersecting families
Fan Chang, Hong Liu, Miao Liu
We prove a sharp product theorem for -cross-intersecting families in the -biased measure. If , , and $\mathcal{F}_1,\dots,\mathcal{F}_r\subset…
math.CO2024
Asymptotically sharp bounds for cancellative and union-free hypergraphs
Miao Liu, Chong Shangguan, Chenyang Zhang
An -graph is called -cancellative if for arbitrary distinct edges , it holds that ; it is cal…