Zobrazeno 1 - 10
of 20
pro vyhledávání: '"Zhangjia Han"'
Publikováno v:
AIMS Mathematics, Vol 9, Iss 4, Pp 9587-9596 (2024)
In this paper, we studied the influence of centralizers on the structure of groups, and demonstrated that Janko simple groups can be uniquely determined by two crucial quantitative properties: its even-order components of the group and the set $ \pi_
Externí odkaz:
https://doaj.org/article/9dba76d3559b4eb2a5dc31b3c96466ab
Publikováno v:
AIMS Mathematics, Vol 9, Iss 4, Pp 7955-7972 (2024)
A finite group is called a weakly Dedekind group if all its noncyclic subgroups are normal. In this paper, we determine the complete classification of weakly Dedekind groups.
Externí odkaz:
https://doaj.org/article/074724472bd2413ba5330d6ff5df235c
Autor:
Zhangjia Han, Pengfei Guo
Publikováno v:
Open Mathematics, Vol 19, Iss 1, Pp 63-68 (2021)
In this paper, we call a finite group G G an N L M NLM -group ( N C M NCM -group, respectively) if every non-normal cyclic subgroup of prime order or order 4 (prime power order, respectively) in G G is contained in a non-normal maximal subgroup of G
Publikováno v:
Mathematical Problems in Engineering, Vol 2020 (2020)
The structure of finite groups is widely used in various fields and has a great influence on various disciplines. The object of this article is to classify these groups G whose number of elements of maximal order of G is 20.
Publikováno v:
International Journal of Algebra and Computation. 29:713-722
A finite group [Formula: see text] is called a [Formula: see text]-group if every proper subgroup of [Formula: see text] is either quasi-normal or self-normal in [Formula: see text]. In this paper, the authors classify the non-[Formula: see text]-gro
Publikováno v:
Colloquium Mathematicum. 157:309-316
Publikováno v:
Bulletin of the Korean Mathematical Society. 51:1063-1073
Autor:
Ren Song, Zhangjia Han
Publikováno v:
International Journal of Algebra. 8:563-568
Publikováno v:
Bulletin of the Korean Mathematical Society. 50:2079-2087
An SQNS-group G is a group in which every proper sub-group of G is either s-quasinormal or self-normalizing and a minimalnon-SQNS-group is a group which is not an SQNS-group but all ofwhose proper subgroups are SQNS-groups. In this note all the fini
Autor:
Zhangjia Han1 hzjmm11@yahoo.com.cn, Guiyun Chen2 gychen@swu.edu.cn, Xiuyun Guo1 xyguo@staff.shu.edu.cn
Publikováno v:
Siberian Mathematical Journal. Nov2008, Vol. 49 Issue 6, p1138-1146. 9p. 1 Chart.