On the lower central factors of groups
نویسنده
چکیده
A general method for calculating or constructing lower central factors of groups is presented. Relative basic commutators are defined.
منابع مشابه
Whether all patients with Central precocious puberty should be treated?
Extended Abstract Precocious puberty is the appearance of secondary sexual characteristics before 8 years old in girls and 9 years old in boys. Precocious puberty is divided into 3 groups of central, peripheral and normal variants. Central precocious puberty is accompanied by activation of hypothalamic-pituitary-gonadal axis which causes increase in secretion of GnRH, and in turn increase i...
متن کاملEffect of knee control injury prevention program on landing mechanics, strength of selected lower limb muscles and core stability in adolescent male soccer players
Introduction: Landing mechanics, lower limb muscle strength and central stability are risk factors for anterior cruciate ligament injuries in young football players. The aim of this study was to investigate the effect of the knee control injury prevention program on landing mechanics, strength of selected lower limb muscles and central stability in adolescent male soccer players. Methods: Th...
متن کاملSome Structural Properties of Upper and Lower Central Series of Pairs of Groups
In this paper, we first present some properties of lower and upper central series of pair of groups. Then the notion of $n$-isoclinism for the classification of pairs of groups is introduced, and some of the structural properties of the created classes are proved. Moreover some interesting theorems such as Baer Theorem, Bioch Theorem, Hirsh Theorem for pair of groups are generalized...
متن کاملThe Effect of Body Part-dependent Resistance Training on Lipid Profiles and Hormonal Levels in Young Males
Background. The impact of movement pattern of resistance training on some factors related to cardiovascular diseases is not clear. Objectives. Therefore, the purpose of this study was to investigate the effects of 8 week different resistance training patterns on lipid profile and hormonal responses in young males. Methods. Forty untrained students in 23.8±2.66 average years old a...
متن کاملInteraction between physiographic factors with diversity of plant functional groups in central Zagros forests (Case study: Hashtadpahlo forest, Lorestan)
The present study was performed to identify diversity indices of herb layer functional groups and its relation to physiographical factors in central Zagros forest, Lorestan. For this purpose, sampling of herbaceous plants was conducted randomly in plots of 2×2 m (n=50) in site. All plants were classified to functional groups including forbs, graminoids and legumes, also Raunkiaerchr('39')s life...
متن کاملThe six weeks effect of selected core stabilization exercises on lumbar curvature and functional movement screening test in women with lower crossed syndrome in Covid Pandemic 19
Backgrund: Nowadays, core stability exercises are very important for performance enhancement, injury prevention and post-injury rehabilitation. The aim of this study was to investigate the effect of six weeks of selected core stability exercises on lumbar curvature and functional movement screening test of women with lower crossed syndrome in Covid Pandemic 19. Methods: The present study is a ...
متن کامل