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Undecidability of Adjacent Equality for Insertion, Shuffle, and Crossover Language Operations

Hughes, Charles E.
arXiv (OAI Expanded) · Papers
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formal-languages-and-automata-theory
We study a family of language operations based on insertion, shuffle, and crossover and investigate the undecidability of adjacent equality together with finite convergence and associated spectrum questions. Insertion and shuffle operations on formal languages arise in formal language theory, models
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