Market share The market share of airline a in market m is the sum of osi i(m)over all itineraries iin market m The market share of the competitors of airline a in market m is 1-(the sum of Olim over all itineraries iin market m) Denote this as mscm 2/212021 Barnhart 1.206J/16.77J/ESD. 15J2/21/2021 Barnhart 1.206J/16.77J/ESD.215J 11 Market Share • The market share of airline a in market m is the sum of QSIi(m) a over all itineraries i in market m • The market share of the competitors of airline a in market m is 1 – (the sum of QSIi(m) a over all itineraries i in market m) – Denote this as mscm a