The classification of generalized towers of flag-transitive circular extensions of the sporadic A7-geometry is completed by characterizing two flat geometries on 16 points, constructed in terms of the Steiner system S(24, 8, 5), as the flag-transitive circular extensions of the duals of the sporadic A7-geometry and the Neumaier geometry for A8, and then by showing the non-existence of flag-transitive circular extensions of these geometries. © 1994.
Pasini, A., Yoshiara, S. (1994). Generalized towers of flag-transitive circular extensions of non-classical C3-geometries. JOURNAL OF COMBINATORIAL THEORY. SERIES A, 66(2), 313-320 [10.1016/0097-3165(94)90069-8].
Generalized towers of flag-transitive circular extensions of non-classical C3-geometries
PASINI A.;
1994-01-01
Abstract
The classification of generalized towers of flag-transitive circular extensions of the sporadic A7-geometry is completed by characterizing two flat geometries on 16 points, constructed in terms of the Steiner system S(24, 8, 5), as the flag-transitive circular extensions of the duals of the sporadic A7-geometry and the Neumaier geometry for A8, and then by showing the non-existence of flag-transitive circular extensions of these geometries. © 1994.
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https://hdl.handle.net/11365/7035
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