Block designs with $\gcd (r,\lambda )=1$ admitting flag-transitive automorphism groups

Seyed Hassan Alavi, Mohsen Bayat, Mauro Biliotti +12

In this paper, we present a classification of $2$-designs with $\gcd (r,\lambda )=1$ admitting flag-transitive automorphism groups. If $G$ is a flag-transitive automorphism group of a non-…