2 papers
math.CO2024
The extended irregular domination problem
Lorenzo Mella, Anita Pasotti
In this paper we introduce a new domination problem strongly related to the following one recently proposed by Broe, Chartrand and Zhang. One says that a vertex of a graph …
math.CO2022
Tight globally simple non-zero sum Heffter arrays and biembeddings
Lorenzo Mella, Anita Pasotti
Square relative non-zero sum Heffter arrays, denoted by , have been introduced as a variant of the classical concept of Heffter array. An $\mathrm{N}\m…