Existence of positive S-asymptotically periodic solutions of the fractional evolution equations in ordered Banach spaces

Abstract

In this paper, we discuss the asymptotically periodic problem for the abstract fractional evolution equation under order conditions and growth conditions. Without assuming the existence of upper and lower solutions, some new results on the existence of the positive S-asymptotically ω-periodic mild solutions are obtained by using monotone iterative method and fixed point theorem. It is worth noting that Lipschitz condition is no longer needed, which makes our results more widely applicable.

Keywords

• fractional evolution equation
• S-asymptotically periodic solution
• positive C0-semigroup
• positive mild solution
• monotone iterative method