20 citations · 20 across the 4 of their papers we have counts for
4 papers
Multiparameter -semigroups and multiparameter -cosine functions
Marko Kostic, Halis Can Koyuncuoglu, Youssef N. Raffoul
In this paper, we present several new results concerning multiparameter -semigroups. We introduce and systematically analyze the class of multiparameter -cosine functions, pr…
Existence of periodic solutions in shifts for neutral nonlinear dynamic systems
Murat Adivar, H. Can Koyuncuoglu, Youssef N. Raffoul
In this study, we focus on the existence of a periodic solution for the neutral nonlinear dynamic systems with delay% \[ x^Δ(t)=A(t)x(t)+Q^Δ\left(t,x\left(δ_{-}(s,t)\right) \right)…
Periodic and Asymptotically Periodic Solutions of Systems of Nonlinear Difference Equations with Infinite Delay
Murat Adıvar, H. Can Koyuncuoğlu, Youssef N. Raffoul
In this work we study the existence of periodic and asymptotically periodic solutions of a system of nonlinear Volterra difference equations with infinite delay. By means of fixed…
Shift operators and stability in delayed dynamic equations
Murat Adivar, Youssef N. Raffoul
In this paper, we use what we call the shift operator so that general delay dynamic equations of the form \[ x^Δ(t)=a(t)x(t)+b(t)x(δ_{-}(h,t))δ_{-}^Δ% (h,t),\ \ \ t\in\lbrack t_{0}…