Sang-Eon Han

collaborators

3 papers

math.GN2026

Algebraic structures on digital objects

Sang-Eon Han

The paper aims to introduce a digital-topological ( $D T$ -, for brevity) $k$ -ring and a $D T$ - $k$ -field. They are indeed endowed with both a digital image (or digital object) $(X, k)$ …

math.GN2023

Essential concepts of digital topology (digital $k$ -covering spaces and pseudo $k$ -covering spaces)

Sang-Eon Han

The present paper focuses on the notions of covering spaces, pseudo-covering spaces, and their equivalences. We discuss something incorrectly mentioned in Boxer's papers and correc…

math.GN2023

Pseudocovering and digital covering spaces

Sang-Eon Han

The notions of a local $(k_{0}, k_{1})$ -isomorphism and a weakly local $(k_{0}, k_{1})$ -isomorphism play crucial roles in developing a digital $(k_{0}, k_{1})$ -covering space and a pseudo-$(k_0,k…

Algebraic structures on digital objects

Essential concepts of digital topology (digital k-covering spaces and pseudo k-covering spaces)

Pseudocovering and digital covering spaces

Essential concepts of digital topology (digital $k$ -covering spaces and pseudo $k$ -covering spaces)