Variants on Digital Covering Maps

SE Han's paper [11] discusses several variants of digital covering maps. We show several equivalences among these variants and discuss shortcomings in Han's paper

Remarks on digital deformation

The paper [5] defines a notion of digital deformation and claims to prove that if (X, p) is k-deformable into (A, p), then these two pointed images have isomorphic fundamental groups. We present a simple counterexample to this claim

Common Fixed Point Results for Compatible Map in Digital Metric Spaces

The aim of this paper is to define the concept of  compatible maps and its variants in the setting of digital metric spaces and establish some common fixed point results for these maps. Also, an application  of the proposed results is quoted in this note