∑ v ∈ T   i d v    = O ( | V |  )  .   MathType@MTEF@5@5@+=feaafiart1ev1aaatCvAUfKttLearuWrP9MDH5MBPbIqV92AaeXatLxBI9gBaebbnrfifHhDYfgasaacH8akY=wiFfYdH8Gipec8Eeeu0xXdbba9frFj0=OqFfea0dXdd9vqai=hGuQ8kuc9pgc9s8qqaq=dirpe0xb9q8qiLsFr0=vr0=vr0dc8meaabaqaciaacaGaaeqabaqabeGadaaakeaadaaeqbqaaiabdMgaPjabdsgaKnaaBaaaleaacqWG2bGDaeqaaaqaaiabdAha2jabgIGiolabdsfaubqab0GaeyyeIuoakiabg2da9iabd+eapnaabmGabaGaeiiFaWNaemOvayLaeiiFaWhacaGLOaGaayzkaaGaeiOla4caaa@4016@