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math.CO2024
Shiftable Heffter spaces
Marco Buratti, Anita Pasotti
The shiftable Heffter arrays are naturally generalized to the shiftable Heffter spaces. We present a recursive construction which starting from a single shiftable Heffter space lea…
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.CO2024
More Heffter Spaces via finite fields
Marco Buratti, Anita Pasotti
A Heffter space is a resolvable configuration whose points form a half-set of an abelian group and whose blocks are all zero-sum in . It was recently p…