3 papers
math.CO2022
On the Automorphism Group of the Substructure Ordering of Finite Directed Graphs
Fanni K. Nedényi, Ádám Kunos
We investigate the automorphism group of the substructure ordering of finite directed graphs. The second author conjectured that it is isomorphic to the 768-element group $(\mathbb…
math.LO2018
Definability in the embeddability ordering of finite directed graphs, II
Ádám Kunos
We deal with first-order definability in the embeddability ordering of finite directed graphs. A directed graph is said to be embeddable i…
math.LO2018
Definability in the substructure ordering of finite directed graphs
Ádám Kunos
We deal with first-order definability in the substructure ordering of finite directed graphs. In two papers, the author has already investigated the fi…