In this paper, we mainly study the orbital graphs of primitive groups with the socle A7 x A7 which acts by diagonal action. Firstly, we calculate the element conjugate classes of A7, then w...
In the basement of southwestern Niger, weathering and fractured zones concentrate most of the groundwater. This study focuses on fractured media and aims to identify areas of productivity in this aquifer to improve th...
Supported by the National Natural Science Foundation of China(Grant No.11801092);the Characteristic Innovation Project(Natural Science)of Guangdong Province(Grant No.2018KTSCX160);the Fund of Guangzhou Science and Technology(Grant No.201804010088)。
In recent years several authors have determined some 2-designs with flag-transitive point-primitive automorphism group G of almost simple type with sporadic socle. Here we obtain the complete classification of flag-tr...
supported by the National Natural Science Foundation of China(Grant No.11871224).
We state that the flag-transitive automorphism group of a 2-(v,5,λ)design D is primitive of affine type or almost simple type.W e also find that there are up to isomorphism 202-(v,5,λ)designs admitting flag-transiti...
Supported by the National Natural Science Foundation of China(Grant Nos.11471123;11626206);the Scientific Research Foundation for Excellent Talents of Xuzhou Medical University(Grant No.D2016002)
Let D be a nontrivial symmetric(v, k, 4) design, and G ≤ Aut(D) be flag-transitive and point-primitive with PSL_n(q) as socle. Then D is a 2-(15, 8, 4) symmetric design and Soc(G) = PSL_2(9).
In this paper, which is a continuation of our previous paper [T. Albu, M. Iosif, A. Tercan, The conditions (Ci) in modular lattices, and applications, J. Algebra Appl. 15 (2016), http: dx.doi.org/10.1142/S0219498...
Supported by the National Natural Science Foundation of China(Grant Nos.11471123;11426066);the Natural Science Foundation of Guangdong Province(Grant No.S2013010011928)
Let D be a nontrivial symmetric(v, k, λ) design, and G be a subgroup of the full automorphism group of D. In this paper we prove that if G acts flag-transitively, pointprimitively on D and Soc(G) = PSL(2, q), t...
Supported by the National Natural Science Foundation of China(11271208,11471054);Supported by the Graduate Students’Scientific Research Innovation Project of Jiangsu Province Ordinary University(KYLX1213)
This paper is a contribution to the study of the automorphism groups of 2 - (v, k, 1) designs. Let D be a 2 - (v, 23, 1) design and G a block-transitive and point-primitive group of automorphism of D. Then the soc...
Acknowledgements The authors would like to thank the anonymous referees for their valuable suggestions and comments which helped to improve this paper. This work was supported by the National Natural Science Foundation of China (Grant No. 11471123) and the Natural Science Foundation of Guangdong Province (Grant No. $2013010011928).
Consider the flag-transitive 2-(v, k, λ) symmetric designs with (k, λ)= 1. We prove that if () is a nontrivial 2-(v, k, λ)symmetric design with (k,λ) = 1 and G ≤ Aut() is flag-transitive with Sot(G)...
In this paper, we determine the second Hochschild cohomology group for a class of self-injective algebras of tame representation type namely, which are standard one-parametric but not weakly symmetric. These were clas...