Bounded solutions to a class of semilinear integro-differential equations in Banach spaces Original Research Article

Let AA be the generator of an immediately norm continuous C0C0-semigroup defined on a Banach space XX. We study the existence and uniqueness of bounded solutions for the semilinear integro-differential equation with infinite delay View the MathML sourceu′(t)=Au(t)+α∫−∞te−β(t−s)Au(s)ds+f(t,u(t))t∈R;α,β∈R, Turn MathJax on for each f:R×X→Xf:R×X→X satisfying diverse Lipschitz type conditions. Sufficient conditions are established for the existence and uniqueness of an almost periodic, almost automorphic and asymptotically almost periodic solution, among other types of distinguished solutions. These results have significance in viscoelasticity theory. Finally, an example is presented to illustrate the feasibility and effectiveness of the results.