The Structure of Borders in a Small World

• Christian Thiemann,

  Affiliations Department of Engineering Sciences and Applied Mathematics, Northwestern University, Evanston, Illinois, United States of America, Max Planck Institute for Dynamics and Self-Organization, Göttingen, Germany

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• Fabian Theis,

  Affiliations Institute for Bioinformatics and Systems Biology, Helmholtz Center Munich, Neuherberg, Germany, Department of Mathematics, University of Technology Munich, Garching, Germany

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• Daniel Grady,

  Affiliation Department of Engineering Sciences and Applied Mathematics, Northwestern University, Evanston, Illinois, United States of America

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• Rafael Brune,

  Affiliations Department of Engineering Sciences and Applied Mathematics, Northwestern University, Evanston, Illinois, United States of America, Max Planck Institute for Dynamics and Self-Organization, Göttingen, Germany

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• Dirk Brockmann

  * E-mail: brockmann@northwestern.edu

  Affiliations Department of Engineering Sciences and Applied Mathematics, Northwestern University, Evanston, Illinois, United States of America, Northwestern Institute on Complex Systems, Evanston, Illinois, United States of America

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