AFFINE EBENEN MIT ORTHOGONALITdTSRELATION von HORST STRUVE in Koln (BRD) Einleitung Unter einer affinen Ebene d mit Orthogonalitiitsrelation verstehen wir eine affine Ebene, in der das Fano-Axiom und der kleine Satz von DESARGUES gelten und in der eine Orthogonalitiitsrelation gegeben ist, die folge
Affine Ebenen und Tupelsysteme
✍ Scribed by A. Neumaier
- Publisher
- Springer
- Year
- 1979
- Tongue
- English
- Weight
- 738 KB
- Volume
- 8
- Category
- Article
- ISSN
- 0046-5755
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✦ Synopsis
We give two new coordinatization methods for affine planes by means of homogeneous (resp. strong balanced) tuple systems. Their usefulness is demonstrated by proving a characterization of collineation groups of an affine plane with the property (R): The stabilizer of every i E 1® contains only perspectivities with centre i. Besides, we prove: If a projective plane of order v contains an elation of even order d then 2d[v. This implies known results of Hughes (d = 2) and Hall.
📜 SIMILAR VOLUMES
In this paper, we present a general method of constructing topological affine planes having non-continuous parallelism. We prove that a topological affine plane E with point set L k x L k, and with a special 'K-algebraic slope' has a topological affine subplane with noncontinuous parallelism (Satz 4