A hybrid nonlinear alternative theorem and some hybrid fixed point theorems for multimaps
This paper uses the classic Covitz-Nadler fixed point theorem and a concept for condensing multimaps to obtain two Krasnoselskii-Schaefer-type nonlinear alternative theorems and some fixed point theorems of Krasnoselskii-Sadowskii (or Daher) type for multimaps. A multivalued version of the Krasnoselskii-Daher fixed point theorem is included. The results improve in a broad sense recent ones obtained in this area of research.
scientific article; zbMATH DE number 6490694
scientific article