3 papers
math.CO2026
Recovering of the Grassmann graph from the subgraph of non-degenerate subspaces
Mark Pankov
Let be a (not necessarily finite) field. A subspace of the vector space is called {\it non-degenerate} if it is not contained in a coordinate hyperpla…
math.CO2024
Point-line geometries related to binary equidistant codes
Mark Pankov, Krzysztof Petelczyc, Mariusz Zynel
We investigate point-line geometries whose singular subspaces correspond to binary equidistant codes. The main result is a description of automorphisms of these geometries. In some…
math.CO2024
Symmetric -designs in terms of the geometry of binary simplex codes of dimension
Mark Pankov, Krzysztof Petelczyc, Mariusz Żynel
Let and for a certain . Consider the point-line geometry of -element subsets of an -element set. Maximal singular subspaces of this geometry co…