Boukassa, SalihaAmrouche, Chérif2024-03-312024-03-3120230893-9659https://www.sciencedirect.com/science/article/abs/pii/S0893965923002021https://doi.org/10.1016/j.aml.2023.108770https://dspace.univ-boumerdes.dz/handle/123456789/13749In this paper, we study a linear elliptic system involving Navier-type boundary conditions or tangential components in a three dimensional bounded domain, possibly multiply-connected and with boundary possibly non connected. We establish an appropriate Inf-Sup condition and then we prove the existence and uniqueness of the generalized solutions in Lp-Theory. We also investigate the case of strong solutions.enElliptic problemInf-Sup conditionLp-theoryNavier-type boundary conditionArticle