A note on Lindenmayer systems, Szilard languages, spectra, and equivalence

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We investigate the Szilard languages and the spectra of Lindenmayer systems through the generalization of Lindenmayer systems toK-iteration grammars and context-sensitiveK-iteration grammars. Various decidability and undecidability results are presented with respect to the evaluation of Szilard languages and spectra for particularK-iteration grammars. Further, two different definitions of the Szilard and spectral equivalence of twoK-iteration grammars are investigated.

Work carried out under a National Research Council of Canada Grant No. A-7700.