The Journal of Systems Science and Complexity is dedicated to publishing high quality papers on mathematical theories, methodologies, and applications of systems science and complexity science. It encourages fundamental research into complex systems and complexity and fosters cross-disciplinary approaches to elucidate the common mathematical methods that arise in natural, artificial, and social systems. Topics covered are:complex systems,systems control,operations research for complex systems,economic and financial systems analysis,statistics and data science,computer mathematics,systems security, coding theory and crypto-systems,other topics related to systems science.