Abarzua, N., Pomareda, R., & Vega, O. (2018). Feet in orthogonalBuekenhoutMetz unitals. Adv. Geom., 18(2), 229–236.
Abstract: Given an orthogonalBuekenhoutMetz unital Ualpha,Ubeta, embedded in PG(2, q(2)), and a point P is not an element of Ualpha,Ubeta, we study the set tau(p)(Ualpha,Ubeta) of feet of P in Ualpha,Ubeta. We characterize geometrically each of these sets as either q + 1 collinear points or as q + 1 points partitioned into two arcs. Other results about the geometry of these sets are also given.
