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
An Exhaustive Census of Main-Diagonal Symmetric Costas Arrays of Orders 37-42
Bogdan Dumitru, Cristian Budala
We determine by exhaustive enumeration all main-diagonal symmetric Costas arrays of orders 37 through 42. There are 4 arrays of order 37, none of order 38, 16 of order 39, 2 of ord…