A. Daneshkhah

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20112026

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Showing 2019 · math.GRShow all

5 papers · 2 filters

math.GR2019

Symmetric designs and projective special unitary groups of dimension at most five

Ashraf Daneshkhah

In this article, we study symmetric $(v, k, λ)$ designs admitting a flag-transitive and point-primitive automorphism group $G$ whose socle is a projective special unitary group of…

math.GR2019

A classification of flag-transitive block designs

Seyed Hassan Alavi, Ashraf Daneshkhah, Fatemeh Mouseli

In this article, we investigate $2$ - $(v, k, λ)$ designs with $g cd (r, λ) = 1$ admitting flag-transitive automorphism groups $G$ . We prove that if $G$ is an almost simple group, then suc…

math.GR2019

Flag-transitive block designs and unitary groups

Seyed Hassan Alavi, Mohsen Bayat, Ashraf Daneshkhah

In this article, we study $2$ -designs with $g cd (r, λ) = 1$ admitting a flag-transitive automorphism group. The automorphism groups of these designs are point-primitive of almost sim…

math.GR2019

Flag-transitive block designs with prime replication number and almost simple groups

Seyed Hassan Alavi, Mohsen Bayat, Jalal Choulaki +1

In this article, we study $2$ -designs with prime replication number admitting a flag-transitive automorphism group. The automorphism groups of these designs are point-primitive of…

math.GR2019

On flag-transitive automorphism groups of symmetric designs

Seyed Hassan Alavi, Ashraf Daneshkhah, Narges Okhovat

In this article, we study flag-transitive automorphism groups of non-trivial symmetric $(v, k, λ)$ designs, where $λ$ divides $k$ and $k \geq λ^{2}$ . We show that such an automorphism…