Results 31 to 40 of about 798,154 (283)

A Study on Groupoids, Ideals and Congruences via Cubic Sets

open access: yesAxioms, 2022
The inclusion, the intersection and the union between cubic sets are each defined in two ways. From this point of view, we introduce the concepts of cubic subgroupoids, cubic ideals, cubic subgroups, and cubic congruences as two types, respectively, and ...
Jeong-Gon Lee   +4 more
doaj   +1 more source

Centralizers of normal subgroups and the $Z^*$-Theorem [PDF]

open access: yes, 2015
Glauberman's $Z^*$-theorem and analogous statements for odd primes show that, for any prime $p$ and any finite group $G$ with Sylow $p$-subgroup $S$, the centre of $G/O_{p^\prime}(G)$ is determined by the fusion system $\mathcal{F}_S(G)$.
Henke, Ellen, Semeraro, Jason
core   +2 more sources

The hidden subgroup problem and quantum computation using group representations [PDF]

open access: yes, 2003
The hidden subgroup problem is the foundation of many quantum algorithms. An efficient solution is known for the problem over abelian groups, employed by both Simon's algorithm and Shor's factoring and discrete log algorithms.
Hallgren, Sean   +2 more
core   +3 more sources

Normal Subgroups Contained in Frattini Subgroups are Frattini Subgroups [PDF]

open access: yesProceedings of the American Mathematical Society, 1980
We prove that if N is a normal subgroup of the finite group G and if N ⊆ Φ ( G ) N \subseteq \Phi (G) , then there exists a finite group U such that N = Φ ( U ) N = \Phi (U) exactly.
openaire   +1 more source

On groups in which subnormal subgroups of infinite rank are commensurable‎ ‎with some normal subgroup [PDF]

open access: yesInternational Journal of Group Theory, 2022
We study soluble groups $G$ in which each subnormal subgroup $H$ with infinite rank is‎ ‎commensurable with a normal subgroup‎, ‎i.e‎. ‎there‎ ‎exists a normal subgroup $N$ such that $H\cap N$ has finite index‎ ‎in both $H$ and $N$‎.
Ulderico Dardano, Fausto De Mari
doaj   +1 more source

Some normal subgroups of homomorphisms [PDF]

open access: yesTransactions of the American Mathematical Society, 1966
lement of a euclidean neighborhood, and for B the closure of a euclidean neighborhood. They are able to show that the set of h which satisfy (a) is just the group P(X) generated by the elements of H(X) which agree with the identity on some open set, provided X has what they call a stable structure.
openaire   +1 more source

On groups, whose non-normal subgroups are either contranormal or core-free

open access: yesДоповiдi Нацiональної академiї наук України
We investigate the influence of some natural types of subgroups on the structure of groups. A subgroup H of a group G is called contranormal in G, if G = HG. A subgroup H of a group G is called core-free in G, if CoreG(H) = 〈1〉.
L.A. Kurdachenko   +2 more
doaj   +1 more source

On Fundamental Algebraic Characterizations of μ-Fuzzy Normal Subgroups

open access: yesJournal of Function Spaces, 2022
In this article, we present the study of μ-fuzzy subgroups and prove numerous fundamental algebraic attributes of this newly defined notion. We also define the concept of μ-fuzzy normal subgroup and investigate many vital algebraic characteristics of ...
Ibtisam Masmali   +4 more
doaj   +1 more source

Frattini Argument for Hall subgroups

open access: yes, 2014
In the paper, it is proved that if a finite group $G$ possesses a $\pi$-Hall subgroup for a set $\pi$ of primes, then every normal subgroup $A$ of $G$ possesses a $\pi$-Hall subgroup $H$ such that ${G=AN_G(H)}$
Revin, Danila, Vdovin, Evgeny
core   +1 more source

Finite coverings by normal subgroups [PDF]

open access: yesProceedings of the American Mathematical Society, 1988
B. H. Neumann’s characterization of groups possessing a finite covering by proper subgroups and Baer’s characterization of groups with finite coverings by abelian subgroups are refined to results about finite coverings by normal subgroups. Various corollaries about the structure of groups having such finite coverings are derived.
Brodie, M. A.   +2 more
openaire   +2 more sources

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