Publication details
Computational power of two stacks with restricted communication
| Authors | |
|---|---|
| Year of publication | 2010 |
| Type | Article in Periodical |
| Magazine / Source | Information and Computation |
| MU Faculty or unit | |
| Citation | |
| Web | http://dx.doi.org/10.1016/j.ic.2009.07.001 |
| Field | General mathematics |
| Keywords | Word rewriting; String rewriting; Post systems; Multi-pushdown machines; Communication; Universality |
| Description | Rewriting systems working on words with a center marker are considered. The derivation is done by erasing a prefix or a suffix and then adding a prefix or a suffix. This models a communication of two stacks according to a fixed protocol defined by the choice of rewriting rules. The paper systematically considers different cases of these systems and determines their expressive power. Several cases are identified where very restricted communication surprisingly yields computational universality. |
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