Ádám Kunos

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math.LO2018

Definability in the embeddability ordering of finite directed graphs, II

Ádám Kunos

We deal with first-order definability in the embeddability ordering $(D; \leq)$ of finite directed graphs. A directed graph $G \in D$ 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 $(D; ⊑)$ of finite directed graphs. In two papers, the author has already investigated the fi…