a result of dixon‎, ‎evans and smith shows that if $g$ is a locally (soluble-by-finite) group whose proper subgroups are (finite rank)-by-abelian‎, ‎then $g$ itself has this property‎, ‎i.e‎. ‎the commutator subgroup of $g$ has finite rank‎. ‎it is proved here that if $g$ is a locally (soluble-by-finite) group whose proper subgroups have minimax commutator subgroup‎, ‎then also the commutator s...

The shape and dynamics of the nonrelativistic gauge vortex string in parity-broken media is considered, upon reducing problem to finding extremum Abelian Higgs model effective action with fixed B-type helicity field. It shown that contrast case A-type helicity, static solution Ginzburg-Landau energy functional London limit helix specific relation between curvature torsion line depending on stre...

BACKGROUND This study aims at identifying orthodontic activities with the highest frequency of unfavorable/awkward and static postures held over a period of more than 4 s based on kinematic analysis. Moreover, a separate analysis of static postures for orthodontic and non-orthodontic activities serves to evaluate the duration for which these particular postures are assumed. METHODS In total, ...

introduction hemangioma is the most common benign tumor of the liver. most cases are asymptomatic and do not require treatment. a hemangioma can rarely be pedunculated; as a result, it may undergo torsion and infarction, which can make it symptomatic. case presentation we report the case of a 45-year-old woman with acute abdominal pain due to torsion of a giant pedunculated hepatic hemangioma a...

torsion of the gallbladder with gangrene is a rare condition which is generally due to an abnormal anatomical variation of the organ i.e., loss of fixation of the organ to the inferior margin of the liver and the presence of a long meso cyst. the case considered is a seven year old boy who presented with acute abdominal pain. he underwent laparotomy 36 hours after having sustained blunt abdomin...

Torsion of elastic and poroelastic circular shaft of radially inhomogeneous, cylindrically orthotropic materials is studied with emphasis on the end effects example for extruder. To examine the conjecture of Saint-Venant’s torsion, we consider torsion of circular shaft with one end fixed and the other end free on which tractions that results in a pure torque are prescribed arbitrarily over the fr...

In the present work, we study linear, torsion-free metric-Palatini gravity, extended by quadratics of antisymmetric part Ricci tensor and also presence affine connection in matter sector. We show that this gravity reduces dynamically to general relativity plus a geometrical massive vector field corresponding non-metricity connection. geometric Proca couples fermions universally. derive static, ...

We write the field equations of torsion gravity theories and Noether identity they obey directly in terms metric contorsion tensor components expressed with respect to natural coordinates, i.e., without using vierbien but Lagrange multipliers. Then we obtain explicit solutions these equations, under specific ans\"atze for field, by assuming be respectively Bertotti-Robinson, pp-wave, Friedmann-...