$Designs from the groups $PSL_2(q)$ for certain $q

AuthorsM. R. Darafsheh-A. Iranmanesh-R. Kahkeshani
JournalQuaestiones Mathematicae
Paper TypeFull Paper
Published At2009-04
Journal GradeScientific - research
Journal TypeTypographic
Journal CountrySouth Africa

Abstract

Using primitive actions of the projective special linear groups $PSL_2(q)$, $q =$ 37, 41, 43, 47 and 49 some 1-designs are constructed. The automorphism group of all the constructed designs are found. It is shown that all subgroups of the automorphism group of $PSL_2(q)$, $q = $37, 41, 43, 47 and 49 appear as the automorphism group of the constructed designs.

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