2 papers
math.CO2026
Sunflower-Free Uniform Families: Recursive Constructions and Explicit Bounds
Edward Axante, Cristian Budala, David Chitic +2
Let be the maximum size of a -uniform family containing no sunflower with petals. We introduce a recursive construction for sunflower-free families and use it to ob…
math.CO2026
Alternating Extremes in Graceful Labelings of Full Binary Trees and Spider Trees
Bogdan Dumitru, Mihai Nacu
We study a pinned form of graceful labeling. For full binary trees, we ask whether some deepest root-to-leaf path can carry the alternating extreme pattern . Suc…