Abstract
Finite Geometry and its applications have been widely investigated since the 1960's. However, the study of non-linear objects was started by Beniamino Segre already in the 1950's. His pioneering work put the basis for studying objects like ovals, unitals, arcs, caps, ovoids, and partitions in subgeometries. Segre's work lead to a further extensive research and many questions are still ope…