Golden section quasigroups as special idempotent medial quasigroups
A family of loops is studied, which arises with its binary operation in a natural way from some transversals possessing a ``normality condition''.
This paper deals with the origins and early history of loop theory, summarizing the period from the 1920s through the 1960s.
In this paper we reexamine the concept of isostrophy. We connect it to the notion of term equivalence, and describe the action of dihedral groups that are associated with loops by means of isostrophy. We also use it to prove and present in a new way some well known facts on -inverse loops and middle Bol loops.