Asymptotic behavior of stochastic functional differential evolution equation
Texas State University, Department of Mathematics
In this work we study the long time behavior of nonlinear stochastic functional-differential equations in Hilbert spaces. In particular, we start with establishing the existence and uniqueness of mild solutions. We proceed with deriving a priory uniform in time bounds for the solutions in the appropriate Hilbert spaces. These bounds enable us to establish the existence of invariant measure based on Krylov-Bogoliubov theorem on the tightness of the family of measures. Finally, under certain assumptions on nonlinearities, we establish the uniqueness of invariant measures.
Stochastic integral, Mild solution, Semigroup, White noise, Delay differential equation, Invariant measure
Clark, J., Misiats, O., Mogylova, V., & Stanzhytskyi, O. (2023). Asymptotic behavior of stochastic functional differential evolution equation. <i>Electronic Journal of Differential Equations, 2023</i>(35), pp. 1-21.