Freezing sandpiles and Boolean threshold networks: equivalence and complexity
Discrete Mathematics
2021-01-13 v1
Abstract
The NC versus P-hard classification of the prediction problem for sandpiles on the two dimensional grid with von Neumann neighborhood is a famous open problem. In this paper we make two kinds of progresses, by studying its freezing variant. First, it enables to establish strong connections with other well known prediction problems on networks of threshold Boolean functions such as majority. Second, we can highlight some necessary and sufficient elements to the dynamical complexity of sandpiles, with a surprisingly crucial role of cells with two grains.
Cite
@article{arxiv.2101.04204,
title = {Freezing sandpiles and Boolean threshold networks: equivalence and complexity},
author = {Eric Goles and Pedro Montealegre Kévin Perrot},
journal= {arXiv preprint arXiv:2101.04204},
year = {2021}
}