P combined     =  P product   ∑ i = 0  n − 1   ( − ln ⁡ ( P product    α   )   )   i   i !   .         MathType@MTEF@5@5@+=feaafiart1ev1aaatCvAUfKttLearuWrP9MDH5MBPbIqV92AaeXatLxBI9gBaebbnrfifHhDYfgasaacH8akY=wiFfYdH8Gipec8Eeeu0xXdbba9frFj0=OqFfea0dXdd9vqai=hGuQ8kuc9pgc9s8qqaq=dirpe0xb9q8qiLsFr0=vr0=vr0dc8meaabaqaciaacaGaaeqabaqabeGadaaakeaafaqabeqadaaabaGaemiuaa1aaSbaaSqaaiabbogaJjabb+gaVjabb2gaTjabbkgaIjabbMgaPjabb6gaUjabbwgaLjabbsgaKbqabaaakeaacqGH9aqpaeaacqWGqbaudaWgaaWcbaGaeeiCaaNaeeOCaiNaee4Ba8MaeeizaqMaeeyDauNaee4yamMaeeiDaqhabeaakmaaqahabaWaaSaaaeaadaqadaqaaiabgkHiTiGbcYgaSjabc6gaUnaabmaabaWaaSaaaeaacqWGqbaudaWgaaWcbaGaeeiCaaNaeeOCaiNaee4Ba8MaeeizaqMaeeyDauNaee4yamMaeeiDaqhabeaaaOqaaGGaciab=f7aHbaaaiaawIcacaGLPaaaaiaawIcacaGLPaaadaahaaWcbeqaaiabdMgaPbaaaOqaaiabdMgaPjabcgcaHaaacqGGUaGlaSqaaiabdMgaPjabg2da9iabicdaWaqaaiabd6gaUjabgkHiTiabigdaXaqdcqGHris5aaaaaaa@65F7@