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Issue title: Contagious Creativity – In Honor of the 80th Birthday of Professor Solomon Marcus
Article type: Research Article
Authors: Mitrana, Victor
Affiliations: Faculty of Mathematics and Computer Science, University of Bucharest, Str. Academiei 14, 70109, Bucharest, Romania and Research Group on Mathematical Linguistics, Rovira i Virgili University, Pça. Imperial Tàrraco 1, 43005 Tarragona, Spain. vmi@fll.urv.es
Note: [] Address for correspondence: Faculty of Mathematics and Computer Science, University of Bucharest, Str. Academiei 14, 70109, Bucharest, Romania
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.
Keywords: External contextual grammars, multi-dimensional external contextual grammars, range concatenation grammars
Journal: Fundamenta Informaticae, vol. 64, no. 1-4, pp. 307-316, 2005
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