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math.CO2026
On Colorful Kruskal--Katona Theorems
Ting-Wei Chao, Maya Sankar, Hung-Hsun Hans Yu
What is the maximum number of rainbow triangles in an edge-colored graph with edges and colors? Using entropic techniques, we prove an upper bound of rainbow t…
math.CO2026
A Jump in the Codegree Turán Densities of Long Tight Cycles
József Balogh, Haoran Luo, Maya Sankar
We study the codegree Turán density of , the -uniform hypergraph tight cycle of length . A result of Han, Lo, and Sanhueza-Matamala states that if $\el…