Parametrization of 4 Ã— 4-matrices G of the complex linear group GL(4, C) in terms of four complex 4-vector parameters (k,m, n, l) is investigated. Additional restrictions separating some subgroupsâ€¦ (More)

Parametrization of 4 Ã— 4 â€“ matrices G of the complex linear group GL(4, C) in terms of four complex vector-parameters G = G(k,m, n, l) is investigated. Additional restrictions separating someâ€¦ (More)

By analogy with the Lobachevsky space H 3 , generalized parabolic coordinates (t 1 , t 2 , Ï†) are introduced in Riemannian space model of positive constant curvature S 3. In this case parabolicâ€¦ (More)

On unique parametrization of the linear group GL(4.C) and its subgroups by using the Dirac matrix algebra basis A unifying overview of the ways to parameterize the linear group GL(4.C) and itsâ€¦ (More)

137Cs speciation and distribution in the components of the biogeocenosis of the Yenisei River floodplain such as soils, rhizosphere, and plants were studied. The study was carried out near zones ofâ€¦ (More)