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Journal of Siberian Federal University. Mathematics & Physics, 2022, Volume 15, Issue 3, Pages 378–384 DOI: https://doi.org/10.17516/1997-1397-2022-15-3-378-384
(Mi jsfu1005)
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This article is cited in 1 scientific paper (total in 1 paper)
Dihedral group of order $8$ in an autotopism group of a semifield projective plane of odd order
Olga V. Kravtsova Siberian Federal University, Krasnoyarsk, Russian Federation
DOI:
https://doi.org/10.17516/1997-1397-2022-15-3-378-384
Abstract:
We investigate the well-known hypothesis of D. R. Hughes that the full collineation group of a non-Desarguesian semifield projective plane of a finite order is solvable (the question 11.76 in Kourovka notebook was written down by N. D. Podufalov). The spread set method allows us to prove that any non-Desarguesian semifield plane of order $p^N$, where $p\equiv 1\pmod 4$ is prime, does not admit an autotopism subgroup isomorphic to the dihedral group of order $8$. As a corollary, we obtain the extensive list of simple non-Abelian groups which cannot be the autotopism subgroups.
Keywords:
semifield plane, spread set, Baer involution, homology, autotopism.
Received: 10.01.2022 Received in revised form: 14.02.2022 Accepted: 01.04.2022
Citation:
Olga V. Kravtsova, “Dihedral group of order $8$ in an autotopism group of a semifield projective plane of odd order”, J. Sib. Fed. Univ. Math. Phys., 15:3 (2022), 378–384
Linking options:
https://www.mathnet.ru/eng/jsfu1005 https://www.mathnet.ru/eng/jsfu/v15/i3/p378
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