2 papers
math.FA2026
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…
math.CA2013
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…