F u  = ∑ j ≠ i   max ⁡  v ∈ V j        w u v         ( 1 )    MathType@MTEF@5@5@+=feaafiart1ev1aaatCvAUfKttLearuWrP9MDH5MBPbIqV92AaeXatLxBI9gBaebbnrfifHhDYfgasaacH8akY=wiFfYdH8Gipec8Eeeu0xXdbba9frFj0=OqFfea0dXdd9vqai=hGuQ8kuc9pgc9s8qqaq=dirpe0xb9q8qiLsFr0=vr0=vr0dc8meaabaqaciaacaGaaeqabaqabeGadaaakeaacqWGgbGrdaWgaaWcbaGaemyDauhabeaakiabg2da9maaqafabaWaaCbeaeaacyGGTbqBcqGGHbqycqGG4baEaSqaaiabdAha2jabgIGiolabdAfawnaaBaaameaacqWGQbGAaeqaaaWcbeaakiabbccaGaWcbaGaemOAaOMaeyiyIKRaemyAaKgabeqdcqGHris5aOGaem4DaC3aaSbaaSqaaiabdwha1jabdAha2bqabaGccaWLjaGaaCzcamaabmGabaGaeGymaedacaGLOaGaayzkaaaaaa@4A63@