Strong Jordan systems are certain subspaces of associative algebras closed under
inversion and with many units. Every strong Jordan system gives rise to a chain space. We …

Divisible Designs, Laguerre Geometry, and Beyond Page 1 Hans Havlicek Divisible Designs,
Laguerre Geometry, and Beyond Summer School on Combinatorial Geometry and …

We show that each Jordan homomorphism R→ R′ of rings gives rise to a harmonic
mapping of one connected component of the projective line over R into the projective line …

In this paper, we bring together design theory and projective geometry over a ring. Both
disciplines are well established, but the results on the interaction between them are rare and …

Jordan-Systeme sind gewisse Teilstrukturen von K-Algebren. Bisher wurden die projektive
Gerade P (J) über einem Jordan-System J sowie die zugehörige Kettengeometrie nur für …

Let R be a ring (with unit element). A point of the projective line P (R) over R is a module of
the form Ra where a∈ R2 admits some b such that (a, b) is a basis for the free R-module R2 …

StUdy's Ubertragungsprinzip is one of the fundamental results in geometry, discovered
around the turn of the century, nearly hundred years ago (E. Study [11], F. Klein [9], W …