RDP 2009-02: Competition Between Payment Systems Equation (A11)

h i c D i m + h j c D j , ~ i m f i c / M f j c / M h j c D j m f j c / M . MathType@MTEF@5@5@+= feaagKart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr 4rNCHbGeaGqiVu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq=Jc9 vqaqpepm0xbba9pwe9Q8fs0=yqaqpepae9pg0FirpepeKkFr0xfr=x fr=xb9adbaqaaeGaciGaaiaabeqaamaabaabaaGcbaGaamiAamaaDa aaleaacaWGPbaabaGaam4yaaaakiaadseadaqhaaWcbaGaamyAaaqa aiaad2gaaaGccqGHRaWkcaWGObWaa0baaSqaaiaadQgaaeaacaWGJb aaaOGaamiramaaDaaaleaacaWGQbGaaiilaiaac6hacaWGPbaabaGa amyBaaaakiabgkHiTiaadAgadaqhaaWcbaGaamyAaaqaaiaadogaaa GccaGGVaGaamytaiabgkHiTiaadAgadaqhaaWcbaGaamOAaaqaaiaa dogaaaGccaGGVaGaamytaiabgwMiZkaadIgadaqhaaWcbaGaamOAaa qaaiaadogaaaGccaWGebWaa0baaSqaaiaadQgaaeaacaWGTbaaaOGa eyOeI0IaamOzamaaDaaaleaacaWGQbaabaGaam4yaaaakiaac+caca WGnbGaaiOlaaaa@5DC2@