Hereditary Properties of Tournaments
Hereditary Properties of Tournaments
A collection of unlabelled tournaments ${\cal P}$ is called a hereditary property if it is closed under isomorphism and under taking induced sub-tournaments. The speed of ${\cal P}$ is the function $n \mapsto |{\cal P}_n|$, where ${\cal P}_n = \{T \in {\cal P} : |V(T)| = n\}$. In this paper, …