LAICHI, HaddaEncadreur: Tiaiba, Abdelmoumen2022-06-302022-06-302022-06-10https://repository.univ-msila.dz/handle/123456789/29921The purpose of this thesis is to make a detailed study of a work by Mr. Jerzy SZULGA in 1983 entitled " On lattice summing operators " published in the AMS journal where he gave necessary and su¢ cient conditions for the new type of lattice summing operators and Banach space of start X and cel of arrivals Y which is a lattice Banach space. So that any lattice summing operator T : X ! Y is absolutely summingfrLes operateurs linéaires; latticiellement sommantThesis