RDP 2009-02: Competition Between Payment Systems Equation (28)

h j c ( D i m D i , j m ) ( h i c f i c , * ) . MathType@MTEF@5@5@+= feaagKart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr 4rNCHbGeaGqiVu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq=Jc9 vqaqpepm0xbba9pwe9Q8fs0=yqaqpepae9pg0FirpepeKkFr0xfr=x fr=xb9adbaqaaeGaciGaaiaabeqaamaabaabaaGcbaGaamiAamaaDa aaleaacaWGQbaabaGaam4yaaaakiabgsMiJoaabmaabaWaaSaaaeaa caWGebWaa0baaSqaaiaadMgaaeaacaWGTbaaaaGcbaGaamiramaaDa aaleaacaWGPbGaaiilaiaadQgaaeaacaWGTbaaaaaaaOGaayjkaiaa wMcaamaabmaabaGaamiAamaaDaaaleaacaWGPbaabaGaam4yaaaaki abgkHiTiaadAgadaqhaaWcbaGaamyAaaqaaiaadogacaGGSaGaaiOk aaaaaOGaayjkaiaawMcaaiaac6caaaa@4E16@