Zoran D. Mitrović

On almost coincidence points in generalized convex spaces

We prove an almost coincidence point theorem in generalized convex spaces. As an application, we derive a result on the existence of a maximal element and an almost coincidence point theorem in hyperconvex spaces. The results of this paper generalize some known results in the literature.

A fixed point theorem of Jungck in \(b_v(s)\)-metric spaces

In this paper, we prove the common fixed point theorem of Jungck in

A coupled best approximations theorem in normed spaces

b_v(s)

On an open problem in rectangular b-metric space

bv(s)-metric spaces. As a corollary, a common fixed point theorem in the rectangular b-metric space and the well known common fixed point theorem in b-metric spaces are obtained.

On multi-valued weak quasi-contractions in b-metric spaces

Abstract We establish some existence results for a generalized coupled coincidence point problem (for short, (GCCP)) in topological vector spaces. The solvability of the GCCP is presented using the Fan-KKM lemma. Also we derive the results on coupled coincidence points and coupled fixed points, which were introduced by Lakshmikantham and Ciric and Amini-Harandi.