Embedding theorems for HNN extensions of inverse semigroups

@inproceedings{Yamamura2005EmbeddingTF,
  title={Embedding theorems for HNN extensions of inverse semigroups},
  author={Akihiro Yamamura},
  year={2005}
}
We discuss embedding theorems for HNN extensions and clarify the relationship between the concept by Gilbert and that of Yamamura. We employ the automata theoretical technique based on the combinatorial and geometrical properties of Schützenberger graphs.