Existence of Periodic Positive Solutions for Abstract Difference Equations
نویسندگان
چکیده
has been considered. To the best of our knowledge, however, little has been done for the abstract difference equations see 7–9 . In this note, we will consider this problem. To this end, let X be a real Banach space and let K ⊂ X be a cone, then a Banach space X with a partial ordering ≤ induced by a coneK is called an ordered Banach space. On the other hand, we will denote the identity operator defined on X by I. In 7–9 , the authors considered the existence of periodic solutions for the abstract equation
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