Existential definability of parallelism in terms of betweenness in Archimedean ordered affine geometry

Kalhoff, FranzPambuccian, Victor2009-03-032009-03-032009-03-03http://hdl.handle.net/2003/2603510.17877/DE290R-15384enPreprints der Fakultät für Mathematik ; 2009-03610Existential definability of parallelism in terms of betweenness in Archimedean ordered affine geometrypreprint