1. EXISTENCE OF POSITIVE SOLUTIONS FOR A CLASS OF BVPS IN BANACH SPACES. Authors: LYNA BENZENATI, SVETLIN GEORGIEV GEORGIEV, KARIMA MEBARKI.2. AN EXTENSION OF KRASNOSELSKII’S CONE FIXED POINT THEOREM FOR A SUM OF TWO OPERATORS AND APPLICATIONS TO NONLINEAR BOUNDARY VALUE PROBLEMS. Authors: KARIMA MEBARKI, LYNA BENZENATI.3. EXPANSION-COMPRESSION FIXED POINT THEOREM OF LEGGETT-WILLIAMS TYPE FOR THE SUM OF TWO OPERATORS AND APPLICATIONS FOR SOME CLASSES OF BVPs. Authors: SALIM BENSLIMANE, SVETLIN G. GEORGIEV, KARIMA MEBARKI.