Geodesic
Ordered Desarguesian Affine Hjelmslev Planes
Canadian mathematical bulletin, Tome 21 (1978) no. 2, pp. 229-235

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DOI

A Desarguesian affine Hjelmslev plane (D.A.H. plane) may be coordinatized by an affine Hjelmslev ring (A.H. ring), which is a local ring whose radical is equal to the set of two-sided zero divisors and whose principal right ideals are totally ordered (cf. [3]). In his paper on ordered geometries [4], P. Scherk discussed the equivalence of an ordering of a Desarguesian affine plane with an ordering of its coordinatizing division ring. We shall define an ordered D.A.H. plane and follow Scherk's methods to extend his results to D.A.H. planes and their A.H. rings i.e., we shall show that a D.A.H. plane is ordered if and only if its A.H. ring is ordered. We shall also give an example of an ordered A.H. ring. Finally, we shall discuss some infinitesimal aspects of the radical of an ordered A.H. ring. 
Thomas, L. A. Ordered Desarguesian Affine Hjelmslev Planes. Canadian mathematical bulletin, Tome 21 (1978) no. 2, pp. 229-235. doi: 10.4153/CMB-1978-038-2
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     title = {Ordered {Desarguesian} {Affine} {Hjelmslev} {Planes}},
     journal = {Canadian mathematical bulletin},
     pages = {229--235},
     year = {1978},
     volume = {21},
     number = {2},
     doi = {10.4153/CMB-1978-038-2},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-1978-038-2/}
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