Marcus External Contextual Grammars: From One to Many Dimensions

Authors:
Victor Mitrana
Affiliations:
(Correspd.) Faculty of Mathematics and Computer Science, University of Bucharest, Str. Academiei 14, 70109, Bucharest, Romania and Research Group on Mathematical Linguistics, Rovira i Virgili Univ ...
Venue:
Fundamenta Informaticae - Contagious Creativity - In Honor of the 80th Birthday of Professor Solomon Marcus
Year:
2005

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Abstract

This work is a continuation of [9]. We extend the multi-dimensional external contextual grammars introduced in the aforementioned work with the possibility of adjoining contexts in a selective way. An investigation of some mathematical properties (computational power and recognition complexity) of these new variants of contextual grammars is done via a constant comparison with the corresponding properties of classic Marcus external contextual grammars with or without choice.