2 papers
math.CO2026
Convex geometries and directed paths on three vertices
Júlio Araújo, Mitre C. Dourado, Marisa Gutierrez +2
A convexity space is an ordered pair , where is an arbitrary set and is a family of subsets of , called convex, which contains $\{\emptyset,V\…
math.CO2026
Counting -convex sets in graphs
Mitre C. Dourado, Luciano N. Grippo, Min Chih Lin +1
We study the -convexity, the path convexity generated by all three-vertex paths, and focus on the problem of counting the -convex vertex sets of a graph , denoted by $…