4-dimensional Minkowski planes with large automorphism group.
Günter F. Steinke (1992)
Forum mathematicum
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Günter F. Steinke (1992)
Forum mathematicum
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Steinke, Günter F. (1996)
Beiträge zur Algebra und Geometrie
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Immervoll, Stefan (2003)
Advances in Geometry
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Jaroslav Lettrich (1987)
Časopis pro pěstování matematiky
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Jarosław Kosiorek, Andrzej Matraś (2007)
Bulletin of the Polish Academy of Sciences. Mathematics
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The group generated by double tangency symmetries in a Laguerre plane is investigated. The geometric classification of involutions of a symmetric Laguerre plane is given. We introduce the notion of projective automorphisms using the double tangency and parallel perspectivities. We give the description of the groups of projective automorphisms and automorphisms generated by double tangency symmetries as subgroups of the group M(𝔽,ℝ) of automorphisms of a chain geometry Σ(𝔽,ℝ) following...
John Kalliongis (1992)
Mathematische Annalen
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U. Dempwolff (1985)
Rendiconti del Seminario Matematico della Università di Padova
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Markus Stroppel (1994)
Forum mathematicum
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Giovanni Cutolo (1992)
Atti della Accademia Nazionale dei Lincei. Classe di Scienze Fisiche, Matematiche e Naturali. Rendiconti Lincei. Matematica e Applicazioni
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A characterization of central automorphisms of groups is given. As an application, we obtain a new proof of the centrality of power automorphisms.