We develop a Nash game on the adoption of a new EFTPOS (Electronic Fund Transfer at Point of Sale) card payment media given cash is dispensed by a competitive ATM (Automated Teller Machine) network. Equilibrium conditions when cash and card use coexist entail a specific relationship between the...

Few will argue that the epi-phenomena of biological systems and socio-economic systems are anything but complex. The purpose of this Feature is to examine critically and contribute to the burgeoning multi-disciplinary literature on markets as complex adaptive systems (CAS). The new sciences of...