4-Dimensionale projektive Ebenen mit grosser abelscher Kollineationsgruppe |
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Authors: | Norbert Knarr |
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Institution: | (1) Mathematisches Seminar der Universität, Olshausenstr.40, D-2300 Kiel 1 |
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Abstract: | We show that a 4-dimensional connected abelian group can act in exactly five different ways as a collineation group of a compact 4-dimensional projective plane. Furthermore the complex projective plane is characterized as the only compact 4-dimensional projective plane which admits two different 4-dimensional abelian collineation groups.
Herrn Professor Dr. Eelmut Karzel zum 60. Geburtstag |
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