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Non-Existence of isomorphisms between certain unitals
被引:9
|作者:
Grundhoefer, Theo
[1
]
Krinn, Boris
[2
]
Stroppel, Markus
[3
]
机构:
[1] Univ Wurzburg, Inst Math, D-97074 Wurzburg, Germany
[2] Univ Stuttgart, Inst Geometrie & Topol, D-70550 Stuttgart, Germany
[3] Univ Stuttgart, Fachbereich Math, D-70550 Stuttgart, Germany
关键词:
Unital;
Ree group;
Coulter-Matthews plane;
Isomorphism;
Automorphism group;
O'Nan configuration;
DESIGNS;
D O I:
10.1007/s10623-010-9428-2
中图分类号:
TP301 [理论、方法];
学科分类号:
081202 ;
摘要:
We show that the Ree-Tits unitals are neither classical nor isomorphic to the polar unitals found in the Coulter-Matthews planes. To this end, we determine the full automorphism groups of the finite Ree-Tits unitals.
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页码:197 / 201
页数:5
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