Complex Systems

Founded by Stephen Wolfram in 1987 »
The original journal devoted to the science, mathematics and engineering of systems with simple components but complex overall behavior.

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Complex Systems journal is included in the Web of Science (Clarivate) 2023 Journal Citation Reports with an Impact Factor of 1.2, ranking 11th in the category "Mathematics, Interdisciplinary Application - ESCI" and 5th by total citations.

Full Archives 1987–Present

Hundreds of published papers, encompassing three decades of leading-edge complex systems research, are available for free and immediate download.


Submissions for Complex Systems journal may be made by webform or email. There are no publication charges. Papers submitted to Complex Systems should present results in a manner accessible to a wide readership.

current issue
Volume 32, Issue 4

Current Issue

Patrik Christen
System Metamodeling of Open-Ended Evolution Implemented with Self-Modifying Code

Luan Carlos de Sena Monteiro Ozelim, André Luís Brasil Cavalcante, Todd Rowland and Jan M. Baetens
An Alternative Representation of Turing Machines by Means of the Iota-Delta Function

Savino Longo
Formal Grammars Generating Fractal Descriptions of Molecular Structures

Carlos Zapata-Carratalá and Xerxes D. Arsiwalla
An Invitation to Higher Arity Science


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