Dickson Y. B. Annor

activity

20222025

collaborators

3 papers

math.CO2025

Domination Parameters of Graph Covers

Dickson Y. B. Annor

A graph $G$ is a \emph{cover} of a graph $F$ if there exists an onto mapping $π : V (G) \to V (F)$ , called a (\emph{covering}) \emph{projection}, such that $π$ maps the neighbours of…

math.CO2024

On $r$ -Equichromatic Lines with few points in $C^{2}$

Dickson Y. B. Annor

Let $P$ be a set of $n$ green and $n - k$ red points in $C^{2}$ . A line determined by $i$ green and $j$ red points such that $i + j \geq 2$ and $∣ i - j ∣ \leq r$ is called \emp…

math.CO2022

A Note on the Number of Regions in a Line Arrangement

Dickson Y. B. Annor, Michael S. Payne

For an arrangement of $n$ lines in the real projective plane, we denote by $f$ the number of regions into which the real projective plane is divided by the lines. Using Bojanowski'…

Domination Parameters of Graph Covers

On r-Equichromatic Lines with few points in C2

A Note on the Number of Regions in a Line Arrangement

On $r$ -Equichromatic Lines with few points in $C^{2}$