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Some combinatorial properties of conics in the Hjelmslev plane. (English) Zbl 0853.05018
Summary: We prove some combinatorial properties of conics in desarguesian Hjelmslev planes. The results generalize analogous properties of conics in finite projective geometries, see E. J. F. Primrose [Proc. Cambridge Philos. Soc. 47, 299-304 (1951; Zbl 0042.38803)].

05B25 Combinatorial aspects of finite geometries
51D99 Geometric closure systems
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[4] PRIMROSE E. J. F.: Quadrics in finite geometries. Proc. Cambridge Philos. Soc. 47 (1951), 299-304. · Zbl 0042.38803
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