Haloui, Zine El AbidineBouziani, Abdelfatah2021-11-062021-11-062021http://hdl.handle.net/123456789/11240The aim of this thesis is to prove existence and uniqueness of the solution to a delay semilinear integro-differential parabolic problem, with non local boundary conditions. We use the method of Rothe in a nonclassical function space, where we introduce a natural generalization of the notion of weak solution. We derive the necessary a priori estimates for the approximated solution , and we prove the convergence to the weak solution.enMethod of RotheWeak solutionNonclassical function spaceA priori estimateOther