On Some Discrete Subgroups of The Lorentz GroupSome
discrete subgroups of the Lorentz group are found using Fedorov’s parametrization by means
On finite groups with Hall normally embedded Schmidt subgroupsA
subgroup H of a finite group G is said to
be Hall normally embedded in G if there is a normal
On well p-embedded subgroups of finite groupsLet G be a finite group, H a
subgroup of G
and HsG the
subgroup of H genarated by all those
On derived π-length of a finite π-solvable group with supersolvable π-Hall subgroupIt is proved that if π-Hall
subgroup is a supersolvable group then the derived π-length of a π
Discrete logarithm for nilpotent groups and cryptanalysis of polylinear cryptographic systemWe present an efficient algorithm to compute a
discrete logarithm in a finite nilpotent group
Conditionally Permutable Subgroups and Supersolubility of Finite GroupsA
subgroups H of a group G is called conditionally permutable (or in brevity, c
Supersolubility of a finite group with normally embedded maximal subgroups in Sylow subgroupsA
subgroup A is called seminormal in a group G if there exists a
subgroup B such that
G = AB and AX
Elementary nets (carpets) over a discrete valuation ring (carpet)over a field).
Let R be a
discrete valuation ring, K be the field of fractions of R, σ = (σ ij
О перестановочности максимальных подгрупп с подгруппами Шмидта every proper
subgroup is nilpotent. We establish sufficient conditions for the p-solvability of a finite