Technical Report CS0343

Title: On the Nonclosure of the EOL Class Under Erasing Homomorphism
Authors: Yoav Raz
Abstract: The fact that the languages produced by interactive Lindenmayer systmes with a fast local growth (Bounded Interaction L systems -BIL) are EOL disproves an old assumption that the EOL class is closed under erasing homomorphism. It follows that extending the mechanism of EOL systems using arbitrary homomorphism operation is as powerful as extending it using tables to get the ETOL class.
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