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Cyclic motifs in the Sardex monetary network.

George Iosifidis1, Yanick Charette2, Edoardo M Airoldi3,4

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Community currencies like Sardex facilitate economic activity through transaction cycles. These cycles boost business turnover and reduce debt, indicating the success of mutual credit systems.

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Area of Science:

  • Economics
  • Sociology
  • Network Science

Background:

  • The perception and use of money are evolving, with decentralized systems and community currencies offering new solutions.
  • Community currencies present opportunities for addressing economic and social challenges.

Purpose of the Study:

  • To analyze the Sardex community currency network in Sardinia.
  • To propose performance metrics for mutual credit systems.
  • To identify key economic actors and understand network structure's impact on economic robustness.

Main Methods:

  • Network analysis of Sardex's 1,477 businesses and 48,170 transactions.
  • Quantification of network 'cyclic density' and 'k-cycle centrality'.
  • Analysis of transactions within identified cycles.

Main Results:

  • Geodesic transaction cycles are prevalent, with certain nodes playing pivotal roles.
  • Firms participating in cycles show higher economic turnover and lower currency/debt accumulation.
  • Intermediary nodes and edges also demonstrate a positive, though secondary, effect.

Conclusions:

  • Transaction cycles are key indicators of mutual credit system success.
  • Proposed metrics can evaluate the performance of community currencies and similar economic systems.
  • Network structure significantly influences the economic robustness of these systems.