Dana Angluin, James Aspnes, and David Eisenstat. Stably computable predicates are semilinear. Twenty-Fifth ACM Symposium on Principles of Distributed Computing, July 2006, pp. 292–299.
We consider the model of population protocols introduced by Angluin et. al., in which anonymous finite-state agents stably compute a predicate of their inputs via two-way interactions in the all-pairs family of communication networks. We prove that all predicates stably computable in this model (and certain generalizations of it) are semilinear, answering a central open question about the power of the model.
@inproceedings{AngluinAE2006semilinear,
author = {Dana Angluin and James Aspnes and David Eisenstat},
title = {Stably computable predicates are semilinear},
booktitle = {PODC '06: Proceedings of the twenty-fifth annual ACM symposium on Principles of distributed computing},
year = {2006},
isbn = {1-59593-384-0},
pages = {292--299},
doi = {https://doi.acm.org/10.1145/1146381.1146425},
publisher = {ACM Press},
}