“…One such topic was introduced by Ortega and Rheinboldt [10], who defined arcwise connectivity by replacing the line joining two points by a continuous arc joining them. This idea has been investigated and further extended for different reasons by many authors, see, for example: Avriel and Zang [2], Kaul, Lyall and Kaur [9], Bhatia and Mehra [5], Suneja, Aggarwal and Davar [14], Davar and Mehra [6] and Fu and Wang [7].…”