Search results for "group"
showing 10 items of 19225 documents
On some classes of supersoluble groups
2007
[EN] Finite groups G for which for every subgroup H and for all primes q dividing the index |G:H| there exists a subgroup K of G such that H is contained in K and |K:H|=q are called Y-groups. Groups in which subnormal subgroups permute with all Sylow subgroups are called PST-groups. In this paper a local version of the Y-property leading to a local characterisation of Y-groups, from which the classical characterisation emerges, is introduced. The relationship between PST-groups and Y-groups is also analysed.
Finite groups with all minimal subgroups solitary
2016
We give a complete classification of the finite groups with a unique subgroup of order p for each prime p dividing its order. All the groups considered in this paper will be finite. One of the most fruitful lines in the research in abstract group theory during the last years has been the study of groups in which the members of a certain family of subgroups satisfy a certain subgroup embedding property. The family of the subgroups of prime order (also called minimal subgroups) has attracted the interest of many mathematicians. For example, a well-known result of Itˆo (see [8, Kapitel III, Satz 5.3; 9]) states that a group of odd order with all minimal subgroups in the center is nilpotent. Th…
On the Frattini subgroup of a finite group
2016
We study the class of finite groups $G$ satisfying $\Phi (G/N)= \Phi(G)N/N$ for all normal subgroups $N$ of $G$. As a consequence of our main results we extend and amplify a theorem of Doerk concerning this class from the soluble universe to all finite groups and answer in the affirmative a long-standing question of Christensen whether the class of finite groups which possess complements for each of their normal subgroups is subnormally closed.
Algebraic singularities have maximal reductive automorphism groups
1989
LetX = On/ibe an analytic singularity where ṫ is an ideal of theC-algebraOnof germs of analytic functions on (Cn, 0). Letdenote the maximal ideal ofXandA= AutXits group of automorphisms. An abstract subgroupequipped with the structure of an algebraic group is calledalgebraic subgroupofAif the natural representations ofGon all “higher cotangent spaces”are rational. Letπbe the representation ofAon the first cotangent spaceandA1=π(A).
Performance of the ALICE experiment at the CERN LHC
2014
ALICE is the heavy-ion experiment at the CERN Large Hadron Collider. The experiment continuously took data during the first physics campaign of the machine from fall 2009 until early 2013, using proton and lead-ion beams. In this paper we describe the running environment and the data handling procedures, and discuss the performance of the ALICE detectors and analysis methods for various physics observables.
The action of a compact Lie group on nilpotent Lie algebras of type {{n,2}}
2015
Abstract We classify finite-dimensional real nilpotent Lie algebras with 2-dimensional central commutator ideals admitting a Lie group of automorphisms isomorphic to SO 2 ( ℝ ) ${{\mathrm{SO}}_{2}(\mathbb{R})}$ . This is the first step to extend the class of nilpotent Lie algebras 𝔥 ${{\mathfrak{h}}}$ of type { n , 2 } ${\{n,2\}}$ to solvable Lie algebras in which 𝔥 ${{\mathfrak{h}}}$ has codimension one.
The parental bond, resistance to peer influence and risky driving in adolescence
2014
The present study examined the relations between gender, the parental bond, resistance to peer influence, and risky driving. In particular, the mediating role of resistance to peer pressure in the relationship between parental bond and risky driving was examined. The moderating role of gender on these associations was also investigated. The sample comprised 322 adolescents (136 males and 186 females), aged from 16 to 20 years, who were living in northern Italy. Path analysis results showed that the maternal bond only indirectly influenced adolescents’ risky driving, via resistance to peer influence. On the contrary, the paternal bond was neither directly nor indirectly associated with risky…
Liikuntaa tukevan vanhemmuuden kysely 7-10-vuotiaille lapsille
2023
Tipsu & Tapsu on lapsille suunnattu validoitu mittaristo liikuntaa tukevan vanhemmuuden arvioimiseen. Lapset arvioivat kuvallisen ja tarinallistetun mittariston avulla liikkumiseen liittyviä vanhemmuuskäytäntöjä. Rakennevaliditeetti ja reliabiliteetti: Laukkanen, A., Aunola, K., Korhonen, E. et al. Construct validity and reliability of the physical activity parenting questionnaire for children (PAP-C). Int J Behav Nutr Phys Act 18, 61 (2021). https://doi.org/10.1186/s12966-021-01128-5. Tipsu & Tapsu is a validated scale for children to assess parenting that supports physical activity. Using a pictorial and story-based scale, children assess parenting practices related to physical activity. …
Is no One Left Behind? Inclusive Citizenship in Practices of Self-help Groups in Rural Tanzania
2023
The United Nations’ Sustainable Development Goals (SDGs) are based on the Agenda 2030 according to which ‘no one is left behind’, highlighting the need for inclusive citizenship at all levels. This article examines self-help groups in rural Tanzania as potential arenas for inclusive citizenship, which is defined as bottom-up practices of membership, participation, and livelihood enhancement. However, inclusive citizenship is also characterised by exclusions. Therefore, while acknowledging the important contribution of self-help groups for development, this article scrutinises the question of patterns of exclusion, first, in practices of self-help groups, and second, in the relationships bet…
CCDC 294531: Experimental Crystal Structure Determination
2007
Related Article: C.J.Gomez-Garcia, E.Coronado, S.Curreli, C.Gimemez-Saiz, P.Deplano, M.L.Mercuri, L.Pilia, A.Serpe, C.Faulmann, E.Canadell|2006|Chem.Commun.||4931|doi:10.1039/b610408h