We explore the borderline between decidability and undecidability of the following question: “Let be a class of codes. Given a machine of type , is it decidable whether the language lies in or not?” for codes in general, -codes, codes of finite and bounded deciphering delay, prefix, suffix and bi(pre)fix codes, and for finite automata equipped with different versions of push-down stores and counters.
@article{ITA_2007__41_3_243_0, author = {Fernau, Henning and Reinhardt, Klaus and Staiger, Ludwig}, title = {Decidability of code properties}, journal = {RAIRO - Theoretical Informatics and Applications - Informatique Th\'eorique et Applications}, volume = {41}, year = {2007}, pages = {243-259}, doi = {10.1051/ita:2007019}, mrnumber = {2354356}, zbl = {pre05211858}, language = {en}, url = {http://dml.mathdoc.fr/item/ITA_2007__41_3_243_0} }
Fernau, Henning; Reinhardt, Klaus; Staiger, Ludwig. Decidability of code properties. RAIRO - Theoretical Informatics and Applications - Informatique Théorique et Applications, Tome 41 (2007) pp. 243-259. doi : 10.1051/ita:2007019. http://gdmltest.u-ga.fr/item/ITA_2007__41_3_243_0/
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