Abstract
We introduce a new operation between words and languages, called distributed catenation. The distributed catenation is a natural extension of the well-known catenation operation. As for partial shuffle operation the introduction of this operation is motivated by the theory of concurrency. At the same time the distributed catenation is a powerful operation. For instance, any Turing machine can be simulated by a pushdown automaton that uses distributed catenation for the pushdown memory.
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