Aperiodic Languages and Generalizations
Lila Kari, G. Thierrin · WORLD SCIENTIFIC eBooks · 1994
For every integer k≥0, a class of languages, called k- aperiodic languages, is defined, generalizing the class of aperiodic languages. Properties of these classes are investigated, in particular the operations under which they are preserved. A characterization of the syntactic monoid of a k-aperiodic language is also obtained.