On Groups with an Isolated 2-SubgroupIn the paper, sufficient conditions for a
group with an isolated 2-subgroup to be a
Frobenius group Произведение двух разрешимых подгрупп 3'-индексов of finite
groups. This theme was considered by
R. Guralnik, L.S. Kazarin, V.S. Monahov and other authors
Sharply Doubly Transitive Groups with Saturation ConditionsA number of conditions were found under which a sharply doubly transitive permutation
group has
Combinatorial Structure of a Semigroup of Bistochastic MatricesThe
Frobenius form of an irreducible bistochastic matrix is clarified. A generalization
The Perron-Frobenius theorem - A proof with the use of Markov chainsThe Perron-
Frobenius theorem for an irreducible nonnegative matrix is proved using the matrix graph