On maximal arcs in projective Hjelmslev planes over chain rings of even characteristic
By showing that hyperovals exist in the characteristic 4 case and do not exist in the characteristic 2 case, the authors prove that maximal \((k, 2)\)-arcs exist in finite projective Hjelmslev planes over chain rings \(R\) of nilpotency index 2 if and only if the characteristic of \(R\) is 4.
scientific article; zbMATH DE number 2173079
scientific article