$\mathrm{EA}(q)$-additive Steiner 2-designs

Marco Buratti, Mario Galici, Alessandro Montinaro +2

A design is $G$-additive with $G$ an abelian group, if its points are in $G$ and each block is zero-sum in $G$. All the few known ``manageable" additive Steiner 2-designs are $\mat…