Akinyele, A.Y.Abubakar, Jos U.Bello, K.A.Alhassan, I.K.Aasa, M.A.2023-05-232023-05-232021https://uilspace.unilorin.edu.ng/handle/20.500.12484/10752In this paper, we presents some partial differential operators defined on suitably chosen function spaces such as H^{−1}(Ω), L^{p}(Ω), with p∈[1,+∞). Laplace operator on a domain Ω in R^{n} subject to the Dirichlet boundary condition was established by generating a C_0-semigroup, which is generated by an infinitesimal generator ω-order reversing partial contraction (ω-ORCP_n).enω-ORCP_n, C_0-semigroup, C_0-Semigroup of Contraction, Differential OperatorArticle