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JOURNALS // Matematicheskii Sbornik // Archive

2024, Volume 215, Number 11


$n$-valued groups, branched coverings and hyperbolic 3-manifolds
V. M. Buchstaber, A. Yu. Vesnin
3
Kolmogorov widths of a Sobolev class with constraints on derivatives in different metrics
A. A. Vasil'eva
33
Classification of nonsingular four-dimensional flows with a untwisted saddle orbit
V. D. Galkin, O. V. Pochinka, D. D. Shubin
65
Saddle connections
A. V. Dukov
92
Lower semicontinuity of relative entropy disturbance and its consequences
M. E. Shirokov
122


© Steklov Math. Inst. of RAS, 2025