RDP 2009-02: Competition Between Payment Systems Equation (3)

Ω i , j c = Ω i , j ; i c Ω i , j ; j c . MathType@MTEF@5@5@+= feaagKart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr 4rNCHbGeaGqiVu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq=Jc9 vqaqpepm0xbba9pwe9Q8fs0=yqaqpepae9pg0FirpepeKkFr0xfr=x fr=xb9adbaqaaeGaciGaaiaabeqaamaabaabaaGcbaGaeuyQdC1aa0 baaSqaaiaadMgacaGGSaGaamOAaaqaaiaadogaaaGccqGH9aqpcqqH PoWvdaqhaaWcbaGaamyAaiaacYcacaWGQbGaai4oaiaadMgaaeaaca WGJbaaaOGaeyOkIGSaeuyQdC1aa0baaSqaaiaadMgacaGGSaGaamOA aiaacUdacaWGQbaabaGaam4yaaaakiaac6caaaa@4C57@