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Published in: Designs, Codes and Cryptography 8/2023

15-05-2023

Block-transitive 3-(vk, 1) designs associated with alternating groups

Authors: Ting Lan, Weijun Liu, Fu-Gang Yin

Published in: Designs, Codes and Cryptography | Issue 8/2023

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Abstract

Let \({\mathcal {D}}\) be a nontrivial 3-(vk, 1) design admitting a block-transitive group G of automorphisms. A recent work of Gan and the second author asserts that G is either affine or almost simple. In this paper, it is proved that if G is almost simple with socle an alternating group, then \({\mathcal {D}}\) is the unique 3-(10, 4, 1) design, and \(G=\textrm{PGL}(2,9)\), \(\textrm{M}_{10}\) or \(\textrm{Aut}(\textrm{A}_6 )=\textrm{S}_6:\textrm{Z}_2\), and G is flag-transitive.
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Metadata
Title
Block-transitive 3-(v, k, 1) designs associated with alternating groups
Authors
Ting Lan
Weijun Liu
Fu-Gang Yin
Publication date
15-05-2023
Publisher
Springer US
Published in
Designs, Codes and Cryptography / Issue 8/2023
Print ISSN: 0925-1022
Electronic ISSN: 1573-7586
DOI
https://doi.org/10.1007/s10623-023-01215-7

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