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Rank three innately transitive permutation groups and related $2$-transitive groups [PDF]

open access: yesInnov. Incidence Geom. 20 (2023) 135-175, 2022
The sets of primitive, quasiprimitive, and innately transitive permutation groups may each be regarded as the building blocks of finite transitive permutation groups, and are analogues of composition factors for abstract finite groups. This paper extends classifications of finite primitive and quasiprimitive groups of rank at most $3$ to a ...
arxiv   +1 more source

Multiple transitivity except for a system of imprimitivity [PDF]

open access: yesJournal of Group Theory, vol. 27, no. 4, 2024, pp. 651-712., 2022
Let $\Omega$ be a set equipped with an equivalence relation $\sim$; we refer to the equivalence classes as blocks of $\Omega$. A permutation group $G \le \mathrm{Sym}(\Omega)$ is $k$-by-block-transitive if $\sim$ is $G$-invariant, with at least $k$ blocks, and $G$ is transitive on the set of $k$-tuples of points such that no two entries lie in the same
arxiv   +1 more source

On the primitivity of Lai-Massey schemes [PDF]

open access: yesMediterranean Journal of Mathematics, 2021, 18(4), 165, 2020
In symmetric cryptography, the round functions used as building blocks for iterated block ciphers are often obtained as the composition of different layers providing confusion and diffusion. The study of the conditions on such layers which make the group generated by the round functions of a block cipher a primitive group has been addressed in the past
arxiv   +1 more source

On imprimitive rank 3 permutation groups [PDF]

open access: yesJ. London Math. Soc. (2011) 84 (3): 649-669, Erratum: J. London Math. Soc. (2012) doi: 10.1112/jlms/jdr074, 2010
A classification is given of rank 3 group actions which are quasiprimitive but not primitive. There are two infinite families and a finite number of individual imprimitive examples. When combined with earlier work of Bannai, Kantor, Liebler, Liebeck and Saxl, this yields a classification of all quasiprimitive rank 3 permutation groups.
arxiv   +1 more source

A New Metric on Symmetric Group and Applications to Block Permutation Codes [PDF]

open access: yesarXiv, 2021
Permutation codes have received a great attention due to various applications. For different applications, one needs permutation codes under different metrics. The generalized Cayley metric was introduced by Chee and Vu [4] and this metric includes several other metrics as special cases.
arxiv  

Block Form of Frobenius Groups [PDF]

open access: yesarXiv, 2020
The aim of this paper is to apply character properties of Frobenius group to a local block form of an group algebra. We start by establishing a block form of Brauer permutation Lemma by using block participation of conjugate classes of a group $G$. Then we can define a pair of Frobenius corresponding blocks between a group $G$ and its normal subgroup ...
arxiv  

The lattice of submonoids of the uniform block permutations containing the symmetric group [PDF]

open access: yesSemigroup Forum (2025)
We study the lattice of submonoids of the uniform block permutation monoid containing the symmetric group (which is its group of units). We prove that this lattice is distributive under union and intersection by relating the submonoids containing the symmetric group to downsets in a new partial order on integer partitions. Furthermore, we show that the
arxiv   +1 more source

Multiparticle SUSY quantum mechanics and the representations of permutation group [PDF]

open access: yesJ.Phys.A33:1581,2000, 2000
The method of multidimensional SUSY Quantum Mechanics is applied to the investigation of supersymmetrical N-particle systems on a line for the case of separable center-of-mass motion. New decompositions of the superhamiltonian into block-diagonal form with elementary matrix components are constructed.
arxiv   +1 more source

Free metabelian groups are permutation stable [PDF]

open access: yesarXiv, 2023
We prove that all finitely generated free metabelian groups are permutation stable. This partially answers to the question asked by Levit and Lubotzky whether all finitely generated metabelian groups are permutation stable. Our proof extends the range of application of Levit-Lubotzky's method, which is used to show permutation stability of ...
arxiv  

On finite permutation groups of rank three [PDF]

open access: yesarXiv, 2023
The classification of the finite primitive permutation groups of rank $3$ was completed in the 1980s and this landmark achievement has found a wide range of applications. In the general transitive setting, a classical result of Higman shows that every finite imprimitive rank $3$ permutation group $G$ has a unique non-trivial block system $\mathcal{B ...
arxiv  

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