David A. Meyer,

``Towards the global: complexity, topology and chaos in modelling,
simulation and computation'',

*InterJournal of Complex
Systems*, Article
[123];

chao-dyn/9710005;

in Y. Bar-Yam, ed.,
*Unifying Themes in Complex Systems*,

Proceedings of the International Conference on Complex Systems,
Nashua, NH, 21-26 September 1997
(Cambridge, MA: Perseus Books 2000) 343-356.

Topological effects produce chaos in multiagent simulation and
distributed computation. We explain this result by developing three
themes concerning complex systems in the natural and social sciences:
(*i*) Pragmatically, a system is complex when it is represented
*efficiently* by different models at different scales.
(*ii*) Nontrivial topology, identifiable as we scale towards
the global, *induces* complexity in this sense.
(*iii*) Complex systems with nontrivial topology are typically
chaotic.

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Last modified: 22 feb 00.