期刊： SIBERIAN MATHEMATICAL JOURNAL, 2021; 62 (2)
We consider the subgroups H in a symplectic or orthogonal group over a finite field of odd characteristic such that O-r(H) not equal 1 for some odd pr......
期刊： SIBERIAN MATHEMATICAL JOURNAL, 2021; 62 (4)
This paper is concerned with the observer-based controller for the stabilization of linear systems with multiple delays. We design a state observer fo......
期刊： SIBERIAN MATHEMATICAL JOURNAL, 2021; 62 (2)
Given a prime p and a partition sigma = {{p}, {p}'} of the set of all primes, we describe the structure of the nonnilpotent finite groups whose every ......
期刊： SIBERIAN MATHEMATICAL JOURNAL, 2021; 62 (1)
Under study are the arithmetic properties of second maximal subgroups of finite groups. Generally speaking, we investigated the problem by Monakhov [1......
期刊： SIBERIAN MATHEMATICAL JOURNAL, 2021; 62 (1)
We study the influence of weakly subnormal and partially subnormal subgroups on the structure of a group G. In particular, we prove that a finite grou......
期刊： SIBERIAN MATHEMATICAL JOURNAL, 2021; 62 (1)
We prove that G is a finite sigma-soluble group with transitive sigma-permutability if and only if the following hold: (i) G possesses a complete Hall......
期刊： SIBERIAN MATHEMATICAL JOURNAL, 2020; 61 (6)
We study the delay-dependent stability of linear high-order delay differential systems of neutral type. We firstly derive a bound of the unstable eige......
期刊： SIBERIAN MATHEMATICAL JOURNAL, 2020; 61 (6)
A subgroup K of G is M-p-supplemented in G if there exists a subgroup B of G such that G = KB and TB < G for every maximal subgroup T of K with ver......
期刊： SIBERIAN MATHEMATICAL JOURNAL, 2019; 60 (1)
Let pi be a set of primes and let H be a pi-prefrattini subgroup of a finite soluble group G. We prove that there exist elements x, y, z is an element......
期刊： SIBERIAN MATHEMATICAL JOURNAL, 2019; 60 (3)
Let G be a finite group, and let sigma = {sigma(i) | i I} be a partition of the set of all primes P and sigma(G) = {sigma(i) | sigma(i) (G) empty set}......
期刊： SIBERIAN MATHEMATICAL JOURNAL, 2019; 60 (4)
Let sigma = {sigma(i) | i is an element of I} be some partition of the set of all primes DOUBLE-STRUCK CAPITAL P,let null not equal pi subset of sigma......
期刊： SIBERIAN MATHEMATICAL JOURNAL, 2019; 60 (5)
Considering regular mappings of Euclidean spaces, we study the distortion of the Hausdorff dimension of a given set under restrictions on the rank of ......
期刊： SIBERIAN MATHEMATICAL JOURNAL, 2019; 60 (5)
We study finite nonsoluble generalized Frobenius groups; i.e., the groups G with a proper nontrivial normal subgroup F such that each coset Fx of prim......
期刊： SIBERIAN MATHEMATICAL JOURNAL, 2018; 59 (1)
Let G be a finite group and let sigma = {sigma (i) | i a I} be a partition of the set of all primes P. A set a"i of subgroups of G is said to be a com......
期刊： SIBERIAN MATHEMATICAL JOURNAL, 2018; 59 (2)
A formation F of finite groups is called a GWP-formation if the F-residual of the group generated by two F-subnormal subgroups is the subgroup generat......
