Higher Dimensional Automata
Zoltán Ésik, Zoltán L. Németh · BRICS Report Series · 2002
We provide the basics of a 2-dimensional theory of automata on series-parallel biposets. We define recognizable, regular and rational sets of series-parallel biposets and study their relationship. Moreover, we relate these classes to languages of series-parallel biposets definable in monadic second-order logic.