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JOURNALS // Sibirskii Matematicheskii Zhurnal // Archive

2021, Volume 62, Number 1


Rings over which matrices are sums of idempotent and $q$-potent matrices
A. N. Abyzov, D. T. Tapkin
3
Multivalued quasimöbius mappings from circle to circle
V. V. Aseev
19
On universal pairs in the Ershov hierarchy
N. A. Bazhenov, M. Mustafa, S. S. Ospichev
31
Ulyanov-type embedding theorems for functions on zero-dimensional locally compact groups
S. S. Volosivets
42
On the coincidence of the classes of finite groups $E_{\pi_x}$ and $D_{\pi_x}$
K. A. Ilenko, N. V. Maslova
55
Almost $\omega$-categorical weakly $o$-minimal theories of convexity rank $1$
B. Sh. Kulpeshov, T. S. Mustafin
65
Extensions of semigroups and morphisms of semigroup $C^*$-algebras
E. V. Lipacheva
82
On characterization of simple orthogonal groups of odd dimension in the class of periodic groups
D. V. Lytkina, V. D. Mazurov
97
Asymptotic stability for a class of equations of neutral type
V. V. Malygina, A. S. Balandin
106
Recognizing $A_7$ by its set of element orders
A. S. Mamontov, E. Jabara
117
A new characterization of finite $\sigma$-soluble $P\sigma T$-groups
Yu. Mao, X. Ma, W. Guo
131
The maximal cardinality of the base in $P_{2}\times P_{2}$
S. Meshaik, T. Oner
144
Embeddings determined by universal words in the rank $2$ free group
V. H. Mikaelian
154
Solution of Ponomarev's problem of condensation onto compact sets
A. V. Osipov, E. G. Pytkeev
164
On the right-symmetric algebras with a unital matrix subalgebra
A. P. Pozhidaev, I. P. Shestakov
173
Nilpotency of alternative and Jordan algebras
A. V. Popov
185
The Cauchy problem for the nonlinear long longitudinal waves equation in a viscoelastic rod
Kh. G. Umarov
198
Finite groups with weakly subnormal and partially subnormal subgroups
J. Huang, B. Hu, A. N. Skiba
210
Some notes on the second maximal subgroups of finite groups
J. Zhang, Zh. Gao, L. Miao
221
Locally finite groups with prescribed structure of finite subgroups
A. A. Shlepkin
226


© Steklov Math. Inst. of RAS, 2025