In this paper we will extend the concept of multi-valued Feng-Liu contraction, by imposing a
nonlinear assumption on the operator. Then, fixed point, strict fixed point and stability …

In this paper, we will prove several new results related to the concept of the multi-valued
Feng–Liu contraction. An existence, approximation and localization fixed point theorem for a …

This paper deals with a type of fixed point obtained from a family of generalized graph
contractions that we adapt in the framework of a-metric space. We state and prove many …

In this work we will present a generalization of Covitz-Nadler's contraction principle, as well
as of the multi-valued graph contraction principle. The results of this paper extend and …

The main aim of this paper is omitting some superfluous assumptions in the definition of the
class of functions Θ, by means of which were defined and studied various classes of ϑ …

In this paper, we will prove several new results related to the concept of the multi-valued
Feng–Liu contraction. An existence, approximation and localization fixed point theorem for a …

The main aim of this paper is omitting some superfluous assumptions in the definition of the
class of functions Θ, by means of which were defined and studied various classes of θ …